Explanation:

Who are the Tangams?
The Tangams is a little-known community within the larger Adi tribe of Arunachal Pradesh and resides in the hamlet of Kugging in Upper Siang district’s Paindem circle.
In 1975, the community’s population was pegged at 2,000 spread across 25 villages.
From 2016 to 2020, a team from the Centre for Endangered Languages (CFEL) of Rajiv Gandhi University (RGU), carried out extensive field research and documented the community.
Their survey revealed that Tangams were now concentrated in only one village (Kugging), with only 253 reported speakers.
As per the UNESCO World Atlas of Endangered Languages (2009), Tangam — an oral language that belongs to the Tani group, under the greater Tibeto-Burman language family — is marked ‘critically endangered’.

Explanation:

About Padmanabhaswamy Temple –

The Padmanabhaswamy temple is heavily influenced by the Dravidian style of architecture, which is why it resembles a lot of the temples in the neighbouring state of Tamil Nadu with its tall gopuram and high walls and intricate carvings.
Vishnu is the presiding deity of the Padmanabhaswamy temple and is also the ‘ruler’ of Travancore. He was ‘crowned’ as the Emperor of Travancore in the 18th century and members of the royal family rule as regents on his behalf. Which is also why the royal crown of Travancore has been preserved inside the temple.
Celebrated once every six years in January, the Laksha Deepam festival is the biggest festival of the Padmanabhaswamy temple. The festival gets its name from the lighting of a hundred thousand (one lakh or Laksha) lamps inside the temple and its premises. Held on the day of Makar Sankranti, the festival marks the end of 12 Bhadradeepams, a seven-day ritual that is held twice every year. On the day images of Padmanabha, Narasimha and Krishna are taken out on Garudavahana (Vishnu’s mythical eagle) in a grand procession.
An image of Padmanabha or Vishnu reclining on the serpent Anantha or Adi Sesha is the centre of the Padmanabhaswamy temple. With his right hand placed over a Shiva lingam, Vishnu is flanked by Lakshmi, the goddess of prosperity and Bhudevi, the goddess of Earth. Bramha is shown to emanate from Vishnu’s navel. Interestingly, the image of Vishnu is made out of 12,000 shaligrams or fossilized shells that can be traced back to the banks of Nepal’s Gandaki River.
In 2011 a treasure was revealed from its cellars. The treasure was valued $1 trillion at the time of its discovery making the Padmanabhaswamy Temple the richest in the world. To put this into perspective, the entire Mughal treasury at the zenith of its power could be valued at $90 billion.

Explanation:

Dehing Patkai WLS
Dehing Patkai WLS is located in the Dibrugarh and Tinsukia Districts of Assam and covers an area of 111.19 sq. km rainforest.
It is located in the Dehing Patkai landscape which is a dipterocarp-dominated lowland rainforest.
It spreads across the coal- and oil-rich districts of Upper Assam (Dibrugarh, Tinsukia and Sivasagar) and is believed to be the last remaining contiguous patch of lowland rainforest area in Assam.
The WLS due to their importance for elephant habitat was declared as Dehing-Patkai Elephant Reserve under Project Elephant.
Post upgradation, Dehing Patkai will be the sixth national park in Assam — the other five being Kaziranga, Nameri, Manas, Orang and Dibru-Saikhowa.

Explanation:

The C/2020 F3 comet also dubbed NEOWISE will be visible with the naked eye for around 20 minutes every day for 20 days across India.
What are Comets?
Comets or “dirty snowballs” are mostly made of dust, rocks and ice, the remnants from the time the solar system was formed over 4.6 billion years ago.
The word comet comes from the Latin word “Cometa” which means “long-haired” and the earliest known record of a comet sighting was made by an astrologer in 1059 BC.
Comets can range in their width from a few miles to tens of miles wide.
While there are millions of comets orbiting the sun, there are more than 3,650 known comets as of now, according to NASA.
How do they illuminate?
Comets do not have the light of their own and what humans are able to see from Earth is the reflection of the sun’s light off the comet as well as the energy released by the gas molecules after it is absorbed from the sun.
The visibility cannot be precisely predicted since a lot depends on the way the “outbursts” of gas and dust play out determining how much of a “good show” the comet will put out for observers.
As they orbit closer to the sun, they heat up and release debris of dust and gases that form into a “glowing head” that can often be larger than a planet.

Explanation:  Any action/decision by government of India is an executive order. It does not need the approval of the parliament. Unlike an ordinance, promulgated by the president, executive orders are issued by the government. For Example: Recently, the government of India decided to set up a Coal Regulatory authority by an executive order, as passing the bill in the parliament would take some time.

The National Green Tribunal has been established on 18.10.2010 under the National Green Tribunal Act 2010 for effective and expeditious disposal of cases relating to environmental protection and conservation of forests and other natural resources including enforcement of any legal right relating to environment and giving relief and compensation for damages to persons and property and for matters connected therewith or incidental thereto.

The Central Pollution Control Board (CPCB) of India is a statutory organisation under the Ministry of Environment, Forest and Climate Change (MoE,FCC). It was established in 1974 under the Water (Prevention and Control of Pollution) Act, 1974. A function of CPCB comes under both national level and as State Boards for the Union Territories. CPCB, under the Water (Prevention and Control of Pollution) Act, 1974, and the Air (Prevention and Control of Pollution) Act, 1981, aims to promote cleanliness of streams and wells in different areas of the States by prevention, control and abatement of water pollution, and to improve the quality of air and to prevent, control or abate air pollution in the country