💥UPSC 2026, 2027, 2028 UAP Mentorship (March Batch) + Access XFactor Notes & Microthemes PDF

Type: Prelims Only

  • Wildlife Conservation Efforts

    3 contenders for National Butterfly Status

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: National butterflies

    Mains level: Not Much

    A citizen poll to identify the national butterfly concluded with three species garnering the highest number of votes.

    Try this PYQ:

    Q.With reference to India’s Biodiversity, Ceylon frogmouth, Coppersmith barbet, Gray-chinned minivet and White-throated redstart are-
    (a) Birds
    (b) Primates
    (c) Reptiles
    (d) Amphibians

    Which are the three species?

    (1) Indian Jezebel

    • Blessed with a vibrant colour pattern, including vermilion (Haldi – kumkum), the Indian Jezebel (or Common Jezebel) is known to deter its predators with its flashy wing colours.
    • Regarded as soldiers of farmers, they also prey on parasites that infest fruit-bearing plants.
    • Widely distributed, the species can be spotted in gardens and other lightly wooded areas.

    (2) Krishna Peacock

    • It is a flagship species for biodiversity and conservation, generally found in large numbers in the Himalayas.
    • Possessing a peculiarly large swallowtail, its iridescent green scales diffract light to coat itself in radiance.

    (3) Orange Oakleaf

    • It is commonly known as ‘dead leaf’ for its ability to camouflage as a dry autumn leaf while striking a stationary pose with its wings closed.
    • The masquerade enables the species to prevent it from being devoured by birds in the moist forests of the northern Western Ghats, central, northern and northeastern parts of India where they are generally found.
    • Besides, the Oakleaf is also known to exhibit polyphenism as it assumes specific colour and size during dry and wet seasons.
  • New Species of Plants and Animals Discovered

    Species in news: Abortelphusa Namdaphaensis

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Abortelphusa Namdaphaensis

    Mains level: Eastern Himalayas and its biodiversity

    A crab specie was recently named after Arunachal Pradesh’s pristine forests on the edge of a small stream in Namdapha Tiger Reserve.

    Try this question from CSP 2020:

    Q.With reference to India’s Biodiversity, Ceylon frogmouth, Coppersmith barbet, Gray-chinned minivet and White-throated redstart are:

    (a) Birds
    (b) Primates
    (c) Reptiles
    (d) Amphibians

    Abortelphusa Namdaphaensis

    • The species, a small freshwater crab species, is a tribute to Namdapha, the largest protected area in the Eastern Himalayan Biodiversity Hotspot and the Abor Hills.
    • It is the first Gecarcinucidae to be found in the Himalayan region. Freshwater crabs are divided into two families/categories: Potamidae and Gecarcinucidae.
    • Both differ in abdomen shape and size. Potamidae species have a broad triangular abdomen, whereas, in Gecarcinucidae, the abdomen is mostly T-shaped.
    • While the Gecarcinucidae is found in the peninsular region, the Western Ghats and the Eastern Ghats, Potamidae are found in the Himalayan region.

    What makes it special?

    • The new species was found in a dry area, despite being a “freshwater” crab.
    • Freshwater crabs use their gills to absorb dissolved oxygen from water, but for food, breeding, and other purposes, they do not need water, and thus roam on the land near water.
    • The only reason it was possible to spot this on land is that the habitat around the water body has been preserved, untouched even.
    • Of the 125 freshwater crabs in India, the north-east accounts for 37. Arunachal Pradesh has 15 and Assam has 21.
    • The discovery highlights the potential of Arunachal Pradesh as one of the richest biodiversity hotspots in the country.

    Back2Basics: Namdapha

    • Namdapha (named a National Park in 1983) is known for its rich biodiversity and believed to be the rare area that harbours four large cats: tigers, snow leopards, clouded leopards and leopards.
    • The Abor Hills, bordered by the Mishmi Hills and Miri Hills, is historically known for the Abor Expedition.
    • It is a punitive expedition against the Abors in the North-Eastern Frontier Agency (which corresponds to parts of present-day Assam and Arunachal Pradesh) from October 1911 to April 1912.
    • The expedition had thrown up a plethora of new floral and faunal species, making it a zoological and botanical expedition as well.
  • Monsoon Updates

    What is Global Warming Hiatus (GWH)?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Mascerene High, Global Warming Hiatus (GWH)

    Mains level: Impact of global warming on Indian Monsoon

    A new study on variability in the Mascarene High (MH) in the Southern Indian Ocean during global warming hiatus (GWH) has revealed that the region experienced significantly increased sea surface temperature (SST) during this period (1998-2016).

    Try this PYQ:

    Q.With reference to Ocean Mean Temperature (OMT), which of the following statements is/are correct? (CSP 2020)

    1. OMT is measured upto a depth of 26 degree Celsius isotherm which is 129 meters in the south-western Indian Ocean during January-March.
    2. OMT collected during January-March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean.

    Select the correct answer using the code given below:
    (a) 1 only
    (b) 2 only
    (c) Both 1 and 2
    (d) Neither 1 nor 2

    What is Global Warming Hiatus (GWH)?

    • A global warming hiatus is referred to a global warming pause, or a global warming slowdown, which is a period of relatively little change in globally averaged surface temperatures.
    • The hiatus, however, can result in an increase in the SST.

    What is Mascarene High (MH)?

    • The Mascarene High (MH) is a semi-permanent subtropical high-pressure zone in the South Indian Ocean.
    • It is also called the Indian Ocean subtropical high, which is a high-pressure area located between 20° to 35° South latitude and 40° to 90° East longitude.
    • It is a region from where the cross-equatorial winds blow to India.
    • It has been named after the Mascarene Islands, in the Indian Ocean east of Madagascar consisting of the islands belonging to Mauritius as well as the French Réunion Islands.
    • Apart from its large influence on African and Australian weather patterns, it also helps in driving the inter-hemispheric circulation between the Indian Ocean in the south and subcontinental landmass in the north.

    Role of MH

    • The warming in SST due to global warming has resulted in a decrease in the pressure gradient between the MH and the Indian landmass.
    • This in turn suppressed the intensity of low-level cross-equatorial winds over the western Indian Ocean affecting the onset of the monsoon over the Indian subcontinent and rainfall over East Asia.
  • Indian Missile Program Updates

    Supersonic Missile Assisted Release of Torpedo (SMART) System

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: SMART

    Mains level: Indian navy's arsenal

    DRDO successfully conducted the flight test of its Supersonic Missile Assisted Release of Torpedo (SMART) system.

    Try this MCQ:

    Q.The SMART system recently tested by the DRDO is essentially a-

    a)Radar

    b)Torpedo

    c)UAV

    d)Missile

    What is the SMART system?

    • Torpedoes are self-propelled weapons that travel underwater to hit a target but are limited by their range.
    • In the mid-2010s, DRDO undertook a project to build capacity to launch torpedoes assisted by missiles; Monday’s was the first known flight test of the system.
    • This SMART system comprises a mechanism by which the torpedo is launched from a supersonic missile system with modifications that would take the torpedo to a far longer range than its own.
    • For example, a torpedo with a range of a few kilometres can be sent a distance to the tune of 1000 km by the missile system from where the torpedo is launched.

    Why is it significant?

    • SMART is a game-changing technology demonstration in anti-submarine warfare.
    • India’s anti-submarine warfare capacity building is crucial in light of China’s growing influence in the Indian Ocean region.
    • Assets of such warfare consist of the deployment of submarines, specialised anti-submarine ships, air assets and state-of-the-art reconnaissance and detection mechanisms.
    • The Navy’s anti-submarine warfare capability got a boost in June after the conclusion of a contract for Advanced Torpedo Decoy System Maareech, capable of being fired from all frontline warships.
    • India has been indigenously developing and building several anti-submarine systems and vessels in the recent past.
  • Roads, Highways, Cargo, Air-Cargo and Logistics infrastructure – Bharatmala, LEEP, SetuBharatam, etc.

    Kozhikode-Wayanad Tunnel Project

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: About the Tunnel, EIA

    Mains level: NA

    Kerala CM has launched a tunnel road project that would connect Kozhikode with Wayanad.

    Try this PYQ:

    Q.From the ecological point of view, which one of the following assumes importance in being a good link between the Eastern Ghats and the Western Ghats?

    (a) Sathyamangalam Tiger Reserve

    (b) Nallamala Forest

    (c) Nagarhole National Park

    (d) Seshachalam Biosphere Reserve

    Kozhikode-Wayanad Tunnel Project

    • The 7-km tunnel, being described as the third-longest in the country, is part of an 8-km road cutting through sensitive forests and hills of the Western Ghats.
    • Its endpoints are at Maripuzha in Thiruvambady village panchayat (Kozhikode) and Kalladi in Meppadi panchayat (Wayanad).
    • The tunnel is an outcome of a decades-long campaign for an alternative road as the Thamarassery Ghat Road is congested and gets blocked by landslides during heavy monsoon.

    How will the road impact the ecology?

    • The Forest Department has identified the proposed route as a highly sensitive patch comprising evergreen and semi-evergreen forests, marshlands and shola tracts.
    • This region is part of an elephant corridor spread between Wayanad and Nilgiri Hills in Tamil Nadu.
    • Two major rivers, Chaliyar and Kabani that flows to Karnataka, originate from these hills in Wayanad.
    • Eruvazhanjipuzha, a tributary of Chaliyar and the lifeline of settlements in Malappuram and Kozhikode, begins in the other side of the hills.
    • The region, known for torrential rain during the monsoon, has witnessed several landslides, including in 2019 at Kavalappura near Nilambur and at Puthumala, Meppadi in Wayanad.

    Environmental clearance issues

    • Proponents of the project have been stressing that the tunnel will not destroy forest (trees).
    • The MoEFCC guidelines state that the Forest Act would apply not only to surface area but the entire underground area beneath the trees.
    • For tunnel projects, conditions relating to underground mining would be applicable.
    • As the proposed tunnel is 7 km long, it will require emergency exit points and air ventilation wells among other measures, which would impact the forest further.
  • Innovations in Biotechnology and Medical Sciences

    2020 Nobel for Hepatitis C Virus discovery

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Hepatitis

    Mains level: Not Much

    Americans Harvey J Alter and Charles M Rice, and British scientist Michael Houghton were awarded the Nobel Prize for Medicine or Physiology on Monday for the discovery of the hepatitis C virus.

    Try this PYQ:

    Q.Which one of the following statements is not correct? (CSP 2019)

    (a) Hepatitis B virus is transmitted much like HIV.

    (b) Hepatitis B. unlike Hepatitis C, does not have a vaccine.

    (c) Globally, the number of people infected with Hepatitis B and C viruses arc several times more than those infected with HIV.

    (d) Some of those infected with Hepatitis B and C viruses do not show the symptoms for many years.

    Hepatitis C Virus

    • Hepatitis C virus (HCV) is a bloodborne virus and causes liver diseases. It refers to an inflammatory condition of the liver.
    • The novel virus caused several deaths in the 1960s and 1970s — but remained unknown until its discovery in the late 1980s.

    What are other Hepatitis Viruses?

    • Before the discovery of the Hepatitis C virus, two other viruses were known to cause hepatitis in patients.
    • The Hepatitis A virus was known to spread mainly through contaminated food and water and caused a relatively milder form of liver inflammation.
    • Hepatitis B, discovered in the 1960s, was known to transmit mainly through infected blood and caused a more serious form of the disease.
    • Incidentally, the discovery of the Hepatitis B virus too was rewarded with a Nobel Prize in Medicine, given to Baruch Blumberg in 1976. There are vaccines available for this disease now.

    How Hepatitis C came to observation?

    • The discovery and identification of the Hepatitis B virus facilitated the development of a diagnostic test to detect its presence in blood.
    • Thereafter, only blood sanitized from this virus would be given to patients, but it was observed that even this sanitized blood was able to prevent only 20% of the blood-borne hepatitis cases.
    • It was then that the search for the new virus began.

    How is Hepatitis C treated?

    • Presently there is no vaccine available for HCV. However, it can be treated with antiviral medication.
    • Hepatitis A and B are preventable by vaccine.

    Back2Basics:

    https://www.civilsdaily.com/news/in-news-nobel-prize/

  • Tax Reforms

    What is Sheltering of Taxes?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Tax Sheltering

    Mains level: Not Much

    This newscard is an excerpt from an original article published in TH.

    We can expect a statement based question comparing Tax Shelters and Tax Heavens.

    What is a Tax Shelter?

    • A tax shelter is a financial vehicle that an individual can use to help them lower their tax obligation and, thus, keep more of their money.
    • It is a legal way for individuals to “stash” their money and avoid getting it taxed.
    • A tax shelter is entirely different from a tax haven because the latter exists outside the country and its legality can, at times, be questionable.
    • A tax shelter, on the other hand, is entirely legal and keeps all monies within an individual’s home country.
  • Innovations in Biotechnology and Medical Sciences

    What is Ketogenic Diet?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Ketogenic Diet

    Mains level: Not Much

    Ketogenic or Keto Diet is popularly followed as a weight loss diet across the world.

    Try this PYQ:

    Q.Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity? (CSP 2014)

    (a) They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency.

    (b) They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy.

    (c) They neutralize the free radicals produced in the body during metabolism.

    (d) They activate certain genes in the cells of the body and help delay the ageing process.

    What is Ketogenic Diet?

    • The Keto Diet is one of the most popular weight-loss diets the world over.
    • It consists of a high-fat, moderate-protein and low-carb diet.
    • It helps in weight loss by achieving ketosis — a metabolic state where the liver burns body fat and provides fuel for the body, as there is limited access to glucose.

    What constitutes a keto diet?

    • A classic keto generally requires that 90 per cent of a person’s calories come from fat, 6 per cent from protein and 4 per cent from carbs.
    • But there are many versions doing the rounds since this one was designed for children suffering from epilepsy to gain control over their seizures.

    How does it impact the body?

    • If we starve the body of carbohydrate, after burning out the glucose, the liver starts breaking down fats for energy.
    • Ketosis is common in all kinds of fasting, but in a keto diet, when one is feeding it by giving a lot of fats from outside without carbs, it can become mildly toxic.
    • It may lead to many nutrient deficiencies such as carbohydrates, proteins, vitamins (especially vitamin A, D, E, & K) and minerals like calcium, phosphorus, sodium.
    • Extreme carbohydrate restriction can lead to hunger, fatigue, low mood, irritability, constipation, headaches, and brain fog, which may last days to weeks

    What impact does it have on our kidneys?

    • Even the moderate increase in protein needs to be carefully monitored, especially in those who are already suffering from chronic kidney disease, as it could lead to kidney failure.
    • One should get a thorough assessment and make sure they have normal kidney function before choosing this diet.
    • This diet could lead to increased stress on the kidneys and result in kidney stones, as they are made to work overtime.
  • Modern Indian History-Events and Personalities

    Personality in news: Shyamji Krishna Varma

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Various social reformers

    Mains level: NA

    PM has paid rich tributes to revolutionary freedom fighter Shyamji Krishna Varma on his birth anniversary.

    Try this PYQ:

    Q. The Ghadr (Ghadar) was a –

    (a) Revolutionary association of Indians with headquarters at San Francisco.

    (b) Nationalist organization operating from Singapore

    (c) Militant organization with headquarters at Berlin

    (d) Communist movement for India’s freedom with head-quarters at Tashkent

    About Shyamji Krishna Varma

    • SK Varma (1857–1930) was an Indian revolutionary fighter, a patriot, lawyer and journalist who founded the Indian Home Rule Society, India House and The Indian Sociologist in London.
    • He was a noted scholar in Sanskrit and other Indian languages.
    • He pursued a brief legal career in India and served as the Divan of a number of Indian princely states in India.
    • He had, however, differences with Crown authority, was dismissed following a supposed conspiracy of local British officials at Junagadh and chose to return to England.
    • An admirer of Dayanand Saraswati’s approach of cultural nationalism, and of Herbert Spencer, Krishna Varma believed in Spencer’s dictum: “Resistance to aggression is not simply justified, but imperative”.
  • Roads, Highways, Cargo, Air-Cargo and Logistics infrastructure – Bharatmala, LEEP, SetuBharatam, etc.

    ATAL: World’s Longest Highway Tunnel

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Atal Tunnel

    Mains level: Significance of the Border Infrastructure

    PM Modi has inaugurated the Atal Tunnel at Rohtang at an altitude of above 3,000 metres in Himachal Pradesh.

    Refer this link to read more about Himalayan passes and rivers

    https://www.civilsdaily.com/the-northern-and-northeastern-mountains-part-1/

    Atal Tunnel

    • The 9.02 km-long-tunnel, built by the Border Roads Organisation (BRO), is the world’s longest highway tunnel and connects Manali to Lahaul-Spiti valley.
    • It provides all-weather connectivity to the landlocked valley of Lahaul-Spiti, which remains cut-off for nearly six months in a year as the Rohtang Pass is usually snow-bound between November and April.
    • Before the tunnel construction, the Lahaul Valley used to remain closed for vehicular movement due to bad weather conditions.
    • It reduces the distance by 46 km between Manali and Leh and the travel time by about 4 to 5 hours. It is expected to boost tourism and winter sports in the region.
    • The tunnel, also significant from the military logistics viewpoint, will provide better connectivity to the armed forces in reaching Ladakh.