Note4Students
From UPSC perspective, the following things are important :
Prelims level: Monsoon terminologies
Mains level: Not Much
Central Idea: The monsoon is likely to set in over Kerala with a “slight delay” on June 4, the India Meteorological Department (IMD) said. The usual onset date over Kerala is June 1, within a seven-day window.
What does the “Onset of Monsoon” mean?
- The onset of the monsoon over Kerala marks the beginning of the four-month, June to September southwest monsoon season over India.
- It brings more than 70 per cent of the country’s annual rainfall.
- It marks a significant transition in the large-scale atmospheric and ocean circulations in the Indo-Pacific region.
- The IMD announces it only after certain newly defined and measurable parameters, adopted in 2016, are met.
- The onset is a significant day in India’s economic calendar.
How does IMD predict the monsoon?
- Broadly, the IMD checks for the consistency of rainfall over a defined geography, its intensity, and wind speed:
- Rainfall: The IMD declares the onset of the monsoon if at least 60% of 14 designated meteorological stations in Kerala and Lakshadweep record at least 2.5 mm of rain for two consecutive days at any time after May 10.
- Wind field: The depth of westerlies should be upto 600 hectopascal (1 hPa is equal to 1 millibar of pressure) in the area bound by the equator to 10ºN latitude, and from longitude 55ºE to 80ºE. The zonal wind speed over the area bound by 5-10ºN latitude and 70-80ºE longitude should be of the order of 15-20 knots (28-37 kph) at 925 hPa.
- Heat: The INSAT-derived Outgoing Longwave Radiation (OLR) value (a measure of the energy emitted to space by the Earth’s surface, oceans, and atmosphere) should be below 200 watt per sq m (wm2) in the box confined by 5-10ºN latitude and 70-75ºE latitude.
- The onset is not officially declared until the prescribed conditions (above) are met.
Factors considered by IMD
- The IMD uses a specialised model that forecasts the arrival dates within a four-day window.
- It uses six predictors:
- Minimum temperatures over northwest India
- Pre-monsoon rainfall peak over south Peninsula
- Outgoing long-wave radiation (OLR) over the South China Sea
- Lower tropospheric zonal wind over the southeast Indian Ocean
- Upper tropospheric zonal wind over the east equatorial Indian Ocean, and
- OLR over the southwest Pacific region
Back2Basics: Long Period Average (LPA)
- The IMD predicts a “normal”, “below normal”, or “above normal” monsoon in relation to a benchmark “long period average” (LPA).
- The LPA of rainfall is the rainfall recorded over a particular region for a given interval (like month or season) average over a long period like 30 years, 50 years, etc.
- LPA refers to the average rainfall recorded from June to September for the entire country, the amount of rain that falls every year varies from region to region and from month to month.
- The IMD’s prediction of a normal monsoon is based on the LPA of the 1971-2020 period, during which India received 87 cm of rain for the entire country on average.
- It has in the past calculated the LPA at 88 cm for the 1961-2010 period, and at 89 cm for the period 1951-2000.
Why LPA is needed?
- The IMD records rainfall data at more than 2,400 locations and 3,500 rain-gauge stations.
- Because annual rainfall can vary greatly not just from region to region and from month to month, but also from year to year within a particular region or month.
- An LPA is needed to smooth out trends so that a reasonably accurate prediction can be made.
- A 50-year LPA covers for large variations in either direction caused by freak years of unusually high or low rainfall, as well as for the periodic drought years.
- It also takes into account the increasingly common extreme weather events caused by climate change.
Range of normal rainfall
The IMD maintains five rainfall distribution categories on an all-India scale. These are:
- Normal or near normal, when the percentage departure of actual rainfall is +/-10% of LPA, that is, between 96-104% of LPA;
- Below normal, when departure of actual rainfall is less than 10% of LPA, that is 90-96% of LPA;
- Above normal, when actual rainfall is 104-110% of LPA;
- Deficient, when departure of actual rainfall is less than 90% of LPA; and
- Excess, when the departure of actual rainfall is more than 110% of LPA.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Dengue
Mains level: Not Much
Central Idea: Serum Institute of India and Panacea Biotec have applied to the ICMR’s call for Expression of Interest for collaborative Phase-III clinical trials for an indigenous dengue vaccine.
What is Dengue?
|
Details |
| Transmission |
Primarily transmitted through the bite of infected Aedes mosquitoes |
| Virus and Serotypes |
Dengue virus belonging to the Flaviviridae family
Four distinct serotypes: DENV-1, DENV-2, DENV-3, and DENV-4 |
| Symptoms |
High fever, severe headache, joint and muscle pain, rash, pain behind the eyes, mild bleeding |
| Severe Dengue |
Progression to severe dengue can cause plasma leakage, bleeding, organ impairment |
| Geographic Distribution |
Endemic in more than 100 countries, particularly in tropical and subtropical regions |
| Incidence and Global Impact |
100-400 million dengue infections occur annually globally, affecting healthcare systems and economies |
| Vector and Breeding Sites |
Aedes aegypti mosquito breeds in stagnant water containers found near human dwellings |
| Treatment |
No specific antiviral treatment available; supportive care, rest, fluid intake, symptom management |
| Prevention and Control |
Reduce mosquito breeding sites, proper water storage, cleaning of water containers, use of insecticides |
Dengue Virus Disease and Global Impact
- Dengue virus disease causes significant morbidity and mortality worldwide, with 2 to 2.5 lakh (200,000 to 250,000) cases reported annually in India.
- The global incidence of dengue has increased dramatically, with over half of the world’s population at risk.
- The World Health Organization (WHO) has identified dengue as one of the top ten global health threats in 2019.
- Currently, there is no specific treatment for dengue, highlighting the urgent need for effective vaccines.
Desirable Characteristics of a Dengue Vaccine
The ICMR highlights the desirable characteristics of a dengue vaccine, including a-
- Favorable safety profile
- Protection against all four serotypes of dengue
- Reduced risk of severe disease and death
- Induction of a sustained immune response and
- Effectiveness regardless of previous sero-status and age
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Merger of Sikkim
Mains level: Not Much
Sikkim Statehood Day
- Sikkim day is annually celebrated on May 16, commemorating the integration of Sikkim with India in 1975.
- The process of Sikkim joining India occurred about two decades after Sardar Vallabbhai Patel led the integration of princely states into India.
Sikkim’s History with the Chogyal Royals
- The kingdom of Sikkim was established in 1642 when Phuntsong Namgyal was consecrated as the first ruler or Chogyal.
- Sikkim’s monarchy, under the Namgyal dynasty, lasted for 333 years until its integration with India in 1975.
- Sikkim had a Tibetan origin and was located between India and China. It often faced conflicts over land with Bhutan and Nepal.
- The British saw Sikkim as a buffer state and established a formal relationship with it.
- Various treaties like the Treaty of Tumlong (1861), Treaty of Titaliya (1817), Calcutta Convention (1890), and Lhasa Convention (1904) shaped the relationship between Sikkim and the British.
Independent India and Sikkim
- After India’s independence, princely states had the option to accede to India or Pakistan.
- Sikkim’s unique relationship with British rule led to complexities in its integration with India.
- Sardar Vallabbhai Patel and BN Rau wanted Sikkim to sign the Instrument of Accession to integrate it with India.
- Jawaharlal Nehru acknowledged the situation in Sikkim and emphasized its autonomous growth.
- Sikkim State Congress (SSC), Praja Mandal (PM), and Praja Sudharak Samaj (PSS) demanded a popular government, abolition of landlordism, and accession to India.
- A Standstill Agreement was signed to maintain the existing arrangement while discussions continued.
War with China
- Sikkim had a state council with elected and nominated members.
- Political developments in the 1960s and 1970s played a significant role in Sikkim’s status.
- The formation of the Sikkim National Congress (SNC) in 1960 and changes in political leadership on both sides influenced the course of events.
- India-China war of 1962 and containment of border skirmishes made it important to clarify the relationship between India and Sikkim.
How Sikkim finally joined India?
- The Indian leadership started supporting pro-democracy forces in Sikkim, such as Kazi Dorji of the SNC.
- Protests in Sikkim in 1973 led to a tripartite agreement between the Chogyal, the Indian government, and three major political parties.
- Elections were held in 1974, and a new constitution limited the role of the monarch.
- A referendum held in 1975 resulted in a majority vote in favor of joining India.
- The Constitution (Thirty-Sixth Amendment) Bill was passed, recognizing Sikkim as a state in the Union of India.
- Sikkim’s new parliament proposed a bill for Sikkim to become an Indian state, which was accepted by the Indian government.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Worldcoin
Mains level: NA
Central Idea: Sam Altman, CEO of OpenAI, is reportedly raising $100 million for Worldcoin, a unique cryptocurrency.
What is Worldcoin?
- Worldcoin, co-founded by Altman and Alex Blania in 2019, aims to provide every human being on Earth with a share of its digital token.
- Worldcoin is a crypto project that seeks to establish a global identity and financial network for everyone.
- It utilizes a device called the Orb, which scans people’s irises to verify their uniqueness and humanity.
- Individuals who undergo the iris scan are rewarded with Worldcoin tokens.
- The World App, developed by Worldcoin, enables users to make payments, purchases, and transfers using Worldcoin and other digital assets.
- The project plans to launch in the first half of 2023 and distribute a total of 10 billion tokens, with 80% going to users.
Functioning of Worldcoin
- Worldcoin’s founders aimed to freely distribute shares of the digital token to every person on the planet.
- They envisioned it as a global distribution system for Universal Basic Income and a means to distribute profits generated by AI systems equally among people.
- To ensure fair distribution, Worldcoin utilizes biometric iris scans through the Orb device.
- The Orb scans the iris and converts it into a hash, which is impossible to recreate even if compromised.
- The iris hash and the user’s public key hash are sent to Worldcoin servers, and if the person is new to the system, the hashes are added to the database and the company’s blockchain.
Challenges and criticisms
- Worldcoin faces challenges regarding the accessibility of the Orb and expanding the user database.
- The project plans to incentivize sign-ups by offering coupons or access to loans.
- Concerns exist about the privacy and security of biometric data and potential misuse.
- Questions arise about the feasibility and scalability of reaching unbanked or underbanked populations.
- The value and utility of the Worldcoin token and its competitiveness with other cryptocurrencies or fiat currencies are also subject to scrutiny.
Back2Basics: Cryptocurrency
- A cryptocurrency is a digital asset stored on computerised databases.
- These digital coins are recorded in digital ledgers using strong cryptography to keep them secure.
- The ledgers are distributed globally, and each transaction made using cryptocurrencies are codified as blocks.
- And multiple blocks linking each other forms a blockchain on the distributed ledger.
- There are estimated to be more than 47 million cryptocurrency users around the world.
- These cryptocurrencies are created through a process called mining.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Meri LiFE Mera Swachh Shehar
Mains level: LiFE Initiative
Central Idea: The Union Ministry for Housing and Urban Affairs has launched the ‘Meri LiFE, Mera Swachh Shehar’ campaign.
Meri LiFE Mera Swachh Shehar
- The campaign focuses on waste management and promotes the principles of Reduce, Reuse, and Recycle (RRR).
- It aims to create awareness and encourage individuals to adopt sustainable daily habits for environmental protection.
- The campaign strengthens citizens’ commitment to reducing, reusing, and recycling under Swachh Bharat Mission-Urban 2.0.
- It aligns with Mission LiFE’s objective of adopting sustainable daily habits for environmental conservation.
Objectives of the Campaign
- The campaign involves setting up RRR Centres where citizens can contribute items such as clothes, shoes, books, toys, and plastic for reuse or recycling.
- The collected items will be refurbished or transformed into new products, aligning with the vision of a circular economy.
- The RRR approach empowers craftsmen, recyclers, Self Help Groups, entrepreneurs, and startups to convert waste into various products.
Key initiatives: RRR Centres and Circular Economy
- The RRR Centres to be launched nationwide will serve as one-stop collection centers for various unused or used items.
- Citizens, institutions, and commercial enterprises can deposit plastic items, clothes, shoes, books, and toys at these centers.
- The collected items will be refurbished for reuse or transformed into new products, promoting the government’s vision of a circular economy.
Back2Basics: Lifestyle for the Environment (LiFE)
- The LiFE movement was introduced by India during the 26th United Nations Climate Change Conference of the Parties (COP26) in Glasgow in 2021.
- It aims to promote an environmentally conscious lifestyle that emphasizes mindful and deliberate utilization rather than mindless and wasteful consumption.
- The movement seeks to replace the prevailing “use-and-dispose” economy with a circular economy characterized by conscious and deliberate consumption.
- The objective of the LiFE Movement is to leverage the power of social networks to influence social norms related to climate change.
- It plans to create and nurture a global network of individuals known as ‘Pro-Planet People’ (P3) who are committed to adopting and promoting environmentally friendly lifestyles.
- Through the P3 community, the mission aims to establish an ecosystem that supports and sustains environmentally friendly behaviours.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Innovations for Defence Excellence (IDEX)
Mains level: Not Much
Central Idea
- Innovations for Defence Excellence (IDEX), the flagship initiative of the Ministry of Defence (MoD), has achieved a milestone with the signing of the 250th contract.
- The first contract under Mission DefSpace and the 100th SPRINT (Navy) contract were signed on May 15.
What is Innovations for Defence Excellence (IDEX)?
- IDEX is a government initiative launched in April 2018.
- Its objective is to contribute to the modernization of the Defence Industry.
- The initiative focuses on promoting innovation and technology development in the Defence and Aerospace sectors.
- Industries, including MSMEs, start-ups, individual innovators, R&D institutes, and academia, are engaged under iDEX.
- IDEX provides funding and support to these industries to carry out Research & Development activities.
- The Defence Innovation Organization (DIO) funds and manages IDEX, serving as its executive arm.
Key achievements of IDEX
- The first IDEX contract of Mission DefSpace was exchanged between officials of the MoD and InspeCity, a winner of the challenge for developing a micro propulsion system for CubeSats.
- InspeCity is working on a gas-based compact micro propulsion system that can be integrated with satellites, including the CubeSat swarm under Mission DefSpace.
- IDEX has received over 7,500 applications from individual innovators, Micro, Small, and Medium Enterprises (MSMEs), and startups.
- The initiative has generated thousands of jobs and attracted India’s talent back to the country.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Mitochondrial Replacement Therapy (MRT)
Mains level: Various ARTs
Central Idea
- The birth of a baby using three persons’ DNA using Mitochondrial Replacement Therapy (MRT) in the UK has generated significant attention and discussion.
- The baby has three parents, with the mitochondria coming from a donor in addition to the genetic material from the biological parents.
- This pioneering technology was employed to prevent the baby from inheriting the mother’s mitochondrial disease.
What is Mitochondria?
|
Description |
| Structure |
Membrane-bound organelles with outer and inner membranes |
| Energy Production |
Generate ATP through cellular respiration and oxidative phosphorylation |
| ATP Production |
Breakdown of carbohydrates, fats, and proteins in the inner membrane |
| DNA and Replication |
Possess their own circular DNA (mtDNA) and can replicate independently |
| Other Functions |
Involved in calcium signalling, apoptosis, and synthesis of molecules |
| Inheritance |
Maternally inherited during fertilization |
| Evolutionary Origin |
Arise from a symbiotic relationship with bacteria-like organisms |
| Disorders |
Mutations or dysfunction can cause mitochondrial diseases |
- Certain defects in mitochondria can lead to mitochondrial diseases, impacting the function of energy-hungry tissues in various organs.
- Mitochondrial diseases have no cure but can be treated, and their incidence is estimated to be one in 5,000 people.
- In this case, the mother had a mitochondrial disease that she wanted to avoid passing on to her baby, but she did not want to use a donor egg.
What is Mitochondrial Replacement Therapy (MRT)?
- MRT is a medical technique used to prevent the transmission of certain mitochondrial diseases from a mother to her child.
- It involves replacing faulty mitochondria in an egg or embryo with healthy mitochondria from a donor.
- The procedure is typically performed using in vitro fertilization (IVF) techniques.
- The nucleus, containing the majority of the genetic material, is transferred from the intended parents’ egg or embryo to a donor egg or embryo with healthy mitochondria.
- The resulting embryo, with nuclear DNA from the intended parents and healthy mitochondria from the donor, is then implanted into the mother’s uterus for gestation.
How does it work?
- The father’s sperm fertilizes the eggs from the biological mother and a female donor with healthy mitochondria.
- The genetic material from the donor’s egg is replaced with that of the biological parents, resulting in an egg with the parents’ DNA and the donor’s mitochondria.
- This modified egg is then implanted into the mother’s uterus and carried to full term, resulting in a baby free from the mother’s mitochondrial disease.
Uses of MRT
- Prevention of Mitochondrial Diseases: MRT helps prevent the transmission of certain mitochondrial diseases from mothers to their children.
- Family Planning: It enables individuals or couples with mitochondrial DNA mutations to have genetically related children without the risk of disease inheritance.
- Improved Health: MRT can significantly improve the overall health and well-being of individuals by avoiding debilitating mitochondrial diseases.
- Ethical Considerations: It provides an alternative to traditional donor egg options, allowing intended parents to have a child with their own genetic material while avoiding disease transmission.
- Scientific Advancements: MRT contributes to scientific research and advancements in assisted reproductive technologies, expanding our understanding of mitochondrial biology and potential treatment options for mitochondrial disorders.
Recent advancements in UK
- The baby primarily carries DNA from its biological parents and a small percentage from the donor whose mitochondria was used during fertilization.
Scientific process
- Mitochondrial diseases are inherited from the mother, prompting research to find ways to protect infants from inheriting these diseases.
- The Newcastle Fertility Clinic developed an advanced in vitro fertilization technique known as Mitochondrial Donation Treatment (MDT).
Legal Facilitation of MDT
- The UK government amended the law in 2015 to allow for mitochondrial replacement therapy (MRT) or MDT.
- The Newcastle Fertility Centre became the first center to obtain a license to perform the procedure, and the first cases were approved in 2018.
Issues with MRT
- Transfer of Defective Mitochondria: There is a minimal risk of transferring small amounts of defective mitochondria along with healthy ones during the procedure.
- Long-Term Safety: The long-term safety of MRT is still being studied, and ongoing monitoring is necessary to assess any potential risks or effects.
- Ethical and Social Concerns: MRT raises ethical and social considerations related to the creation and destruction of embryos, use of donor gametes, and altering the germline.
- Limited Availability: MRT is a highly regulated procedure, and its availability may be limited to specific countries or cases approved by regulatory bodies.
- Emotional and Psychological Impact: Undergoing MRT involves emotional implications and decision-making, which can have an impact on individuals and couples involved.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Palghat Gap, Western Ghats
Mains level: Not Much
Central Idea: The article discusses the Palghat (Palakkad) Gap, a significant corridor in the Western Ghats of India. It provides information about the geological origin of the gap.
What is Palghat Gap?
- The Palghat Gap is a 40 km wide corridor in the Western Ghats, known for its steep hills and serving as a gateway to Kerala.
- It is a crucial passage for roads and railways connecting Coimbatore and Palakkad.
- The Bharathappuzha River flows through the Palghat Gap.
- The vegetation in the gap is classified as dry evergreen forest, different from the tropical rainforests of the Western Ghats.
- The Palghat Gap marks a distinct divide in the flora and fauna of the region.
Geological origin of the Palghat Gap
- The Palghat Gap is a geological shear zone running from east to west.
- Shear zones are weak regions in the Earth’s crust, occasionally causing tremors in the Coimbatore region.
- The formation of the Palghat Gap occurred when the continental shelves shifted after the separation of Australia and Africa from the Gondwana landmass.
- India and Madagascar were connected until volcanic activity led to their split, with a similar gap called the Ranotsara Gap in Madagascar.
Biogeographic distinctions and ancient history
- The biogeographic distinctions in species north and south of the Palghat Gap may be attributed to an ancient river or an incursion of the sea in the distant past.
- Elephant populations on the Nilgiris side of the gap have different mitochondrial DNA from elephants in the Anamalai and Periyar sanctuaries.
- DNA analysis of the White-bellied Shortwing, an endemic bird species, shows divergence between populations in the Nilgiris and the Anamalai regions.
Biodiversity south of the Palghat Gap
- The southern region of the Western Ghats, located south of the Palghat Gap, exhibits high species richness and phylogenetic diversity.
- A recent study reports over 450 tree species, including ancient species like Magnolia champaca, dating back 130 million years.
- The warm weather and moist air of the southern Western Ghats support a diverse range of life, making it an island refuge during cycles of ice ages and droughts.
- The southern Western Ghats receive rainfall more evenly throughout the year compared to the northern region.
Back2Basics: Western Ghats
- The Western Ghats, also known as the Sahyadri mountain range, is a UNESCO World Heritage Site and one of the 36 biodiversity hotspots in the world.
- It spans an area of 160,000 sq. km. and stretches for 1,600 km parallel to the western coast of the Indian peninsula, passing through the states of Gujarat, Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu.
|
Description |
| Flora and Fauna |
The Western Ghats are home to a rich diversity of flora and fauna, including over 7,402 species of flowering plants, 1,814 species of non-flowering plants, 139 mammal species, 508 bird species, 227 reptile species, 179 amphibian species, 290 freshwater fish species, and 6,000 insect species. |
| Geological Significance |
The Western Ghats, known as the “Great Escarpment of India,” are older than the Himalayas. They influence India’s monsoon weather patterns by intercepting rain-laden monsoon winds from the southwest during late summer. |
| Geographic Features |
Stretching north to south along the western edge of the Deccan Plateau, the Western Ghats separate the plateau from the narrow coastal plain called the Western Coastal Plains, which lies along the Arabian Sea. |
| Catchment Area |
The Western Ghats cover a vast catchment area for complex riverine drainage systems, contributing to almost 40% of India’s total drainage. The range acts as a barrier, blocking southwest monsoon winds from reaching the Deccan Plateau. |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: London Interbank Offered Rate (LIBOR)
Mains level: Read the attached story
Central Idea: The RBI has issued an advisory to banks and other RBI-regulated entities regarding the transition away from London Interbank Offered Rate (LIBOR) July 1.
What is London Interbank Offered Rate (LIBOR)?
|
Explanation |
| Definition |
LIBOR is a benchmark interest rate used in financial transactions such as loans, derivatives, and bonds.
It is the interest rate at which banks can borrow funds from other banks in the London interbank market.
It serves as a benchmark rate for various financial transactions worldwide. |
| Calculation Method |
LIBOR rates are calculated based on submissions from a panel of major banks in London.
These banks estimate their borrowing costs for various currencies and tenors.
The submissions are used to calculate an average rate, which is published daily by the Intercontinental Exchange (ICE), the administrator of LIBOR. |
| Currencies and Tenors |
LIBOR is calculated for different currencies and tenors ranging from overnight to one year.
The currencies include USD, EUR, GBP, JPY, CHF, and others.
The tenors represent the time periods for which the rates are quoted. |
| Importance |
It has been widely used since the 1980s as a benchmark for financial contracts worth trillions of dollars globally.
It serves as a reference rate for various loans, derivatives, and other financial instruments. |
Why is RBI moving away from LIBOR?
Like many other countries, has been working towards transitioning away from LIBOR. The primary reasons for this transition include:
- Manipulation risks: Following the global financial crisis in 2008, there were concerns about the reliability and potential manipulation of LIBOR.
- Discontinuation of LIBOR: The regulatory authority in the UK that oversees LIBOR, announced in 2017 that it will no longer compel banks to submit the necessary data to calculate LIBOR after the end of 2021.
- Adoption of alternative Reference Rates: Various countries, including India, have identified and adopted alternative reference rates that are more reliable and based on actual market transactions. Ex RBI introduced the Secured Overnight Financing Rate (SOFR).
- Alignment with International Standards: Many countries have already initiated the shift to alternative reference rates, necessitating India’s alignment to maintain consistency and harmonization in international financial markets.
- Risk Mitigation: RBI’s move aims to mitigate the potential risks associated with an unreliable or manipulated benchmark rate.
Related terminologies
Mumbai Interbank Forward Outright Rate (MIFOR): MIFOR is a benchmark rate used in Indian financial markets. It represents the forward premium or discount on the USD-INR exchange rate based on the LIBOR rate.
Fallbacks: They are provisions inserted into contracts to establish alternative reference rates if the original benchmark rate (such as LIBOR) becomes unavailable or unreliable. |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Carbon Dating
Mains level: Not Much
Central Idea: Allahabad high court ordered the ASI to conduct the carbon dating process of the ‘Shivling’ found in the premises of the Gyanvapi mosque, without causing any damage to the structure.
What is Carbon Dating?
- Carbon dating is a widely-used method for determining the age of organic materials that were once living.
- The method is based on the radioactive decay of Carbon-14 (C-14), an isotope of carbon with an atomic mass of 14.
- It works by measuring the ratio of C-12 to C-14 in the atmosphere, as well as in plants and animals that acquire carbon through photosynthesis or food consumption.
The half-life concept
- Carbon-14 has a half-life of 5,730 ± 40 years—i.e., half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5,730 years.
- Because carbon-14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon.
Limitations of Carbon Dating
- Carbon dating has certain limitations and cannot be applied in all circumstances.
- It is not suitable for determining the age of non-living things such as rocks.
- Carbon dating becomes less accurate for objects older than 40,000-50,000 years, as the amount of detectable C-14 becomes significantly small.
- Other radiometric dating methods are employed to determine the age of inanimate objects, which rely on the decay of radioactive elements present in the material.
- Examples of such methods include potassium-argon dating and uranium-thorium-lead dating, which analyze the ratios of specific isotopes to estimate the age of rocks.
Other Dating Methods
In addition to radiometric dating, there are alternative methods to determine the age of objects.
- Cosmogenic nuclide dating: CRN is one such method that utilizes radioactive decay to estimate age and is commonly used to study the age of ice cores in Polar Regions.
- Potassium-argon dating: A radiometric dating method that measures the ratio of potassium to argon isotopes in rocks to determine their age.
- Uranium-thorium-lead dating: A radiometric dating method that analyses the ratios of uranium, thorium, and lead isotopes in rocks to estimate their age.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Alligator Gar
Mains level: Not Much
Central Idea: The Jammu and Kashmir Lake Conservation and Management Authority (LCMA) discovered a rare type of fish known as “Alligator Gar” for the first time during the ongoing cleaning of famous Dal Lake in Srinagar.
Alligator Gar
|
Information |
| Scientific Name |
Atractosteus spatula |
| Size and Weight |
Up to 8 feet in length, over 300 pounds |
| Appearance |
Long, narrow body; crocodile-like head; sharp teeth |
| Distribution |
Central and North America, freshwater habitats |
| Fossil Record |
Traces back to the Early Cretaceous, over 100 million years ago |
| Feeding Habits |
Voracious predator, feeds on fish, turtles, waterfowl, etc. |
| Coloration |
Brown or olive on upper body, lighter underside |
| Longevity |
Can live for several decades |
| Conservation Status |
Least Concerned (IUCN) |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Pokhran-II nuclear tests
Mains level: Read the attached story
Central Idea: The article provides a historical context for India’s nuclear program and focuses specifically on the Pokhran-II nuclear tests conducted in 1998. This year is special, marking 25 years since we started celebrating National Technology Day.
India’s Nuclear Journey: A quick recap
- India conducted nuclear bomb test explosions at Pokhran Test Range in 1998.
- Codenamed Operation Shakti, these tests showcased India’s capability to build nuclear weapons.
- The tests marked the culmination of a long journey that began in the 1940s-50s.
- Physicist Homi J Bhaba played a crucial role in laying the foundations of India’s nuclear program.
- Prime Minister Jawaharlal Nehru supported Bhaba’s efforts and established the Department of Atomic Energy (DAE) in 1954.
Reasons: Threat of China and Pakistan
- India’s perspective on nuclear weapons changed after the 1962 Sino-Indian War and China’s nuclear bomb test in 1964.
- The political establishment realized the need for self-sufficiency in the face of an unfriendly China and Pakistan.
- India sought nuclear guarantees from established nuclear weapons states but was unsuccessful.
- The path to obtaining nuclear weapons became a priority for India.
The “Discriminatory” NPT
- The Non-Proliferation Treaty (NPT) was established in 1968, creating a divide between nuclear-weapon states and non-nuclear states.
- India refused to sign the treaty, as it felt it did not address its concerns about reciprocal obligations from nuclear weapons states.
- The NPT gained widespread international acceptance, but India remained one of the few non-signatories.
Pokhran-I and its Aftermath
- In 1974, India conducted its first nuclear test at Pokhran, known as Pokhran-I or Operation Smiling Buddha.
- The test was described as a “peaceful nuclear explosion” but faced international condemnation and sanctions.
- Political instability, including the Emergency in 1975, hindered India’s nuclear program’s progress.
- Clamor for nuclear weapons resurfaced in the 1980s due to Pakistan’s advancing nuclear capabilities.
The Period between the Two Tests
- India faced challenges due to domestic political instability and changing international dynamics.
- The fall of the USSR in 1991 weakened India’s military alliances.
- The US continued to support Pakistan despite concerns about its nuclear program.
- India faced pressure to quickly develop nuclear weapons as the window of opportunity appeared to be closing.
Pokhran-II: Projecting India’s Strength
- In 1998, the National Democratic Alliance (NDA) came to power under Atal Bihari Vajpayee.
- Operation Shakti, conducted as a response to Pakistan’s missile launch, marked the culmination of India’s nuclear weaponization.
- India declared itself a nuclear weapons state following Pokhran-II.
- The tests faced some sanctions, but India’s growing economy and market potential helped it withstand international pressure.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Chheligada Irrigation Project
Mains level: Not Much
Central Idea: Officials recently directed to begin construction of the multipurpose irrigation project at Chheligada, Odisha.
Chheligada Irrigation Project
- The project is a multipurpose medium project located near the village of Chheligada in the Gajapati District of Odisha.
- The project involves the construction of a 250m long and 30m high dam across the River Badjhore, a tributary of the River Vamsadhara.
- It aims to preserve 5201 hectares of water and provide irrigation to 5760 hectares of land in Ganjam and 500 hectares of land in Gajapati districts.
- The project will also supply drinking water to Brahampur City.
- Furthermore, it includes the development of a mini hydel project at Shiali Loti, Kankata, and Dekili in the Gajapati district, with a capacity to generate 36 MW of electricity.
Salient features of the project
- A centrally located Ogee-type gated spillway with a length of 90m.
- Construction of a 1.13 km long tunnel connecting the Chheligada reservoir with the Ghodahada river.
- Establishment of a canal system to facilitate irrigation in the Gajapati district directly from the dam.
- Implementation of a pipeline network for supplying drinking water to Berhampur in the Ganjam district.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Anganwadi scheme
Mains level: Nutrition support in early childhood
Central Idea: The Centre is planning to promote ‘Early Childhood Care and Education’ through anganwadi centres as part of the ‘Poshan Bhi, Padhai Bhi’ slogan announced by the Women and Child Development Minister.
What is Anganwadi scheme?
- The scheme was started in 1975 and aims at the holistic development of children and empowerment of mother.
- It is a Centrally-Sponsored scheme. The scheme primarily runs through the Anganwadi centre.
- The scheme is under the Ministry of Women and Child Development.
Moto: Poshan Bhi, Padhai Bhi
- The focus will be on both nutrition and early learning for children under 6 years, with a particular emphasis on those under 3 years.
- Early learning has been neglected in the Integrated Child Development Scheme (ICDS) and seen as secondary to nutrition.
- Anganwadi centres will be repositioned as pre-schools to provide early learning access to socially and educationally backward communities.
Why such move?
- Two emerging trends are noted: young children shifting to private pre-schools and under-age children being admitted to Class 1 in some states.
- The quality of services provided at Anganwadi centres is perceived as inferior, leading to the shift to private nursery schools.
Task Force and Recommendations
- Rebranding anganwadis: The task force recommends a “mission-mode approach” to rebranding anganwadis, including infrastructure upgrades, materials, play equipment, etc.
- Focus on volunteer support: It suggests involving panchayat raj institutions, women’s self-help groups, local NGOs, and college volunteers to enhance the learning environment.
- Boost to Anganwadi sisters: The task force proposes re-designating anganwadi workers as anganwadi teachers and helpers as childcare workers.
- Nutrition boost: Infrastructure improvements, additional nutrition supplements (such as eggs and milk), extended timings, creches, and day care services are recommended.
- MGNREGS liasion: The task force suggests leveraging funds from the Mahatma Gandhi National Rural Employment Guarantee Scheme (MGNREGS).
Major target: Improve Child Nutrition
- The task force highlights that over 35% of young children in India are stunted, according to the latest NFHS data.
- Although there has been a reduction, India still has the largest population of stunted children globally.
- Child stunting affects developmental outcomes and the ability to learn at school.
- NFHS-5 reveals that only 11.3% of children below 2 years receive an adequate diet.
- The task force recommends introducing eggs as an effective intervention for nutrition.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Santiniketan
Mains level: Read the attached story
Central Idea
- The article announces that Santiniketan, the home of Nobel laureate Rabindranath Tagore in West Bengal, has been recommended for inclusion in UNESCO’s World Heritage List.
About Santiniketan
Santiniketan is a renowned cultural and heritage place located in Birbhum District, West Bengal, India. It holds historical significance and is known for its association with Nobel laureate Rabindranath Tagore. Here are key points about Santiniketan:
- It was the home of Rabindranath Tagore, where he lived and composed many of his literary works, including songs, poems, and novels.
- The Santiniketan campus is adorned with splendid sculptures, frescoes, murals, and paintings created by renowned artists such as Rabindranath Tagore, Nandalal Bose, Ramkinkar, Binodbehari Mukhopadhyay, and others.
- The region of Birbhum District, where Santiniketan is located, is also famous for its fairs and festivals. Some notable ones are Poush Mela (December), Joydev Mela (January), Basanta Utsav (Holi) in March, and the famous mystic Baul Singers.
- Special cultural events are held during Bengali New Year and Rabindra Janmotsav (birth anniversary of Rabindranath Tagore) in the Bengali month of Boisakh with great enthusiasm.
- Santiniketan celebrates unique festivals like Briksharopan (festival of Planting Saplings) and Halakarshan (festival of Plowing the Fields) on the 22nd and 23rd days of Sravana (August), respectively.
- Varshamangal, the festival of rains, is celebrated during August/September.
- Poush Mela is an annual fair and festival held in Santiniketan, starting on the 7th day of the month of Poush. The fair officially lasts for three days, but vendors may stay until the end of the month. It is known for live performances of Bengali folk music, particularly by bauls (traditional wandering minstrels), and also features tribal dances like Santali.
Recommendation by ICOMOS
- The recommendation for Santiniketan’s inclusion was made by the International Council on Monuments and Sites (ICOMOS), which is the advisory body to the UNESCO World Heritage Centre.
- ICOMOS is a France-based international cultural body dedicated to the conservation and enhancement of global architectural and landscape heritage.
West Bengal’s Representation in World Heritage List
- If selected, Santiniketan would be the second cultural symbol from West Bengal to be included in the UNESCO list.
- In 2021, UNESCO included ‘Durga Puja in Kolkata’ in its list of Intangible Cultural Heritage of Humanity.
Back2Basics: UNESCO World Heritage Sites
|
Description |
| UNESCO World Heritage Sites |
Landmarks or areas selected by UNESCO for their cultural, historical, scientific, or other significant value, legally protected by international treaties. |
| Importance |
World Heritage Sites represent collective and preservative interests of humanity, signifying remarkable accomplishments and intellectual history. |
| Selection Criteria |
Sites must be already-classified landmarks, unique and significant culturally or physically, such as ancient ruins, historical structures, cities, monuments, etc. |
| Conservation |
World Heritage Sites require practical conservation to protect them from risks like trespassing, uncontrolled access, or administrative negligence. |
| World Heritage Committee |
Selects and monitors World Heritage Sites, manages the World Heritage Fund, and provides financial assistance. Composed of 21 states parties elected for a four-year term. |
| Membership |
India is not a member of the World Heritage Committee. |
Note: “States parties” refer to the countries that have ratified the World Heritage Convention and participate in the decision-making process.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Namami Gange Program
Mains level: Read the attached story
Central Idea: The article discusses the results of an analysis of the sludge found in Indian sewage treatment plants (STP) that were set up to treat polluted water from the Ganga under National Mission for Clean Ganga.
About National Mission for Clean Ganga
|
Description |
| Launch |
2014 |
| Aim |
Cleaning and rejuvenating the Ganga river |
| Interventions |
Development of sewage treatment infrastructure, riverfront development, and public awareness campaigns |
| Approach |
River basin approach, identifying pollution hotspots and implementing targeted interventions |
| Implementing Agency |
NMCG |
| Responsibilities |
Coordinating efforts across stakeholders, including state governments, municipalities, and civil society organizations |
| Objective |
Improve water quality and ensure ecological and socio-economic sustainability of the Ganga river |
Sludge classification
- India doesn’t yet have standards classifying sludge as class A or B.
- Treated sludge can be classified as class A or class B, as per the standards of the United States Environment Protection Agency.
- Class A sludge: It is safe to be disposed of in the open and useful as organic fertilizer.
- Class B sludge: It can be used in restricted agricultural applications, with the edible parts of the crop not exposed to the sludge-mixed soil, and animals and people not come into extensive contact.
Current sludge disposal practices
- Currently, those awarded contracts for developing and maintaining STPs under the Namami Ganga Mission are also apportioned land for disposing off sludge.
- However, the sludge is rarely treated, and during rains, it often makes its way back into rivers and local water sources.
Study’s findings
- The sludge analysed after drying fell into the class B category.
- Nitrogen and phosphorus levels were higher than those recommended by India’s fertilizer standards, but potassium levels of some sludges were less than recommended.
- The degree of pathogens, as well as heavy metal contamination, was above the recommended fertilizer standards.
- The calorific value of sludge ranged from 1,000-3,500 kcal/kg, which is lower than the average calorific value of Indian coal.
Recommendations to improve sludge quality
- The report recommends storing the sludge for at least three months to kill pathogens and blending it with cattle manure and husk or local soil to reduce heavy metal.
- However, this would still put it in class B, and converting it into grade A sludge would require far more extensive treatment.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Meerut, 1857 Uprising
Mains level: Not Much
Central Idea
- The article highlights the historical significance of Meerut, a city in western Uttar Pradesh.
- Alamgirpur, the easternmost settlement of the Harappa civilization, is located in Meerut and has archaeological importance.
- However, Meerut gained fame for its role in India’s First War of Independence on May 10, 1857, also known as the Indian Mutiny or Revolt.
Meerut: Historical origins and name
- Meerut has historical origins, possibly deriving its name from Mayarashtra, the capital of Mayasura, who was Ravana’s father-in-law.
- The archaeological site of Vidura-ka-tila, located northeast of Meerut, is believed to be the remains of Hastinapur, the ancient capital of the Kauravas and Pandavas from the Mahabharata.
- Meerut was ruled by the Scindias before being ceded to the British in 1803, which eventually paved the way for the British exit from India.
The 1857 Rebellion
- The rebellion in Meerut was sparked by the introduction of the Enfield rifle and the use of cartridges rumored to be greased with a mixture of cow and pig fat.
- Sepoys (Indian soldiers) who refused to use the cartridges were punished and stripped of their uniforms.
- This incident led to a rebellion among the sepoys and a call for the uprising against British rule.
Outbreak of the Mutiny
- On May 10, 1857, while the European residents of Meerut were attending church, the sound of musketry and columns of smoke signalled the revolt of the native troops.
- The sepoys, having revolted, marched towards Delhi, considering it the power center and the capital of Mughal India.
Meerut’s Significance
- Meerut played a crucial role in the Indian Mutiny, serving as the starting point for the rebellion that spread across the country.
- The mutiny in Meerut inspired and influenced the subsequent events of the uprising.
- D. Savarkar later referred to the Mutiny as the First War of Independence.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Uniforms, Ranks and Insignia
Mains level: Not Much
Central Idea: A decision has been taken at the recent Army Commanders Conference to change the uniforms worn by senior Army officers.
Changes in Uniform
- All officers of the rank of Brigadier and above will now wear common uniform items.
- The common uniform items include berets, badges of rank, belt buckle, and pattern of shoes.
- Regimental lanyards and shoulder flashes will no longer be worn by officers of these higher ranks.
- There will be no item of uniform that will identify them as belonging to a particular Regiment or Corps.
Present Uniform Accoutrements
- Officers from the rank of Lieutenant to General currently wear uniform accoutrements as per their regimental or corps affiliation.
- Each Infantry Regiment and Corps has its own pattern of lanyard, badges of rank, buttons, and belt buckle as per regimental traditions.
Reason for Change
- Regimental service in the Army ends at the rank of Colonel for most officers who rise further.
- Senior officers commanding troops of mixed regimental lineage should present themselves in a neutral uniform rather than a regimental one.
Reversion to Past Practice
- The Army is now reverting to the practice that was followed almost 40 years ago, when the changes towards wearing regimental affiliations took hold in the service.
- Until about the mid-1980s, officers of the rank of Colonel and above had common uniform patterns and insignia.
Tradition in Other Armies
- In the British army, the uniform worn by officers of the rank of Colonel and above is referred to as the Staff uniform, to distinguish it from the Regimental uniform.
- Among neighbouring countries, the Pakistan and Bangladesh armies follow the same pattern as the British army.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Types of coal
Mains level: India's coal import
Central Idea
- India’s coal imports increased by 30% to 162.46 million tonnes in the 2022-23 financial year compared to 124.99 MT in the previous year, according to a report.
- The report was released by mjunction, a B2B e-commerce platform that is a joint venture between Steel Authority of India (SAIL) and Tata Steel.
India’s coal production and consumption
- India is among the top five coal-producing countries in the world.
- Despite being a major producer, India also imports coal to meet some of its demand.
- India is a significant consumer of coal, which is used for power generation and industrial processes.
Import of Coking Coal
- Coking Coal: The import of coking coal rose by 5.44% to 54.46 MT over 51.65 MT in FY22, as per the report by mjunction. Coking coal is a key raw material used in steel making.
- Non-coking coal: In March 2023, non-coking coal import stood at 13.88 MT against 12.61 MT in the same month last year.
- Other imports: The total imports of various types of coal like anthracite, pulverised coal injection (PCI coal), met coke and pet coke, along with coking and non-coking coal, were at 249.06 MT in FY23, up from 200.71 MT in FY22, a rise of over 24%.
Key inferences from this
- The high demand for steam coal in India and the weakening of seaborne prices led to increased volumes during March.
- This trend might continue in the coming months due to above-normal average temperatures expected during the summer.
Why does India import coal?
India imports coal primarily due to the following reasons:
- Lack of good quality coal: India’s domestic coal reserves have limitations in terms of quality, and the country does not have sufficient reserves of good quality coking coal, which is used in steelmaking and allied industries. Therefore, India imports coal to compensate for the lack of good quality coal.
- Growing energy demand: India’s energy demand is continuously increasing due to population growth and rapid urbanization. Coal is a significant contributor to India’s energy mix, and the country needs to import coal to meet its growing energy demand.
- Infrastructure constraints: India’s domestic coal production is limited due to various factors such as geological constraints, land acquisition issues, and environmental regulations. Moreover, India’s domestic coal transport infrastructure is insufficient, and many power plants are located far away from the coal mines, making imports a more viable option.
- Better quality and cost-effectiveness: Importing coal from other countries can sometimes be more cost-effective than producing it domestically, especially when the quality of imported coal is better than domestic coal.
Key terminologies
Coking coal: a type of coal that is used in the production of steel.
Anthracite: a hard and compact type of coal that has a high carbon content.
Pulverised coal injection (PCI coal): a method of injecting pulverized coal into a blast furnace to improve the efficiency of the iron-making process.
Met coke: a type of coke made by heating coal in the absence of air, which is used as a fuel in blast furnaces to produce iron.
Pet coke: a carbon-rich solid material that is derived from oil refining. It is used as a fuel in industrial processes. |
Try this PYQ from CSP 2012:
Despite having large reserves of coal, why does India import millions of tonnes of coal?
- It is the policy of India to save its own coal reserves for the future, and import them from other countries for the present use.
- Most of the power plants in India are coal-based and they are not able to get sufficient supplies of coal from within the country.
- Steel companies need a large quantity of coking coal which has to be imported.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Post your answers here
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