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Type: Prelims Only

  • Wildlife Conservation Efforts

    Ladakh adopts State Animal and Bird

    Prelims Only | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Snow leopard, black-necked crane

    Mains level: Not Much

    Ladakh has adopted two endangered species, snow leopard and black-necked crane, as State animal and State bird, two years after it was carved out as a separate Union Territory (UT) from the erstwhile State of J&K.

    Snow Leopard

    • The snow leopard (Panther unica) and black-necked crane (Grus nicricollis).
    • Snow leopard, whose numbers are dwindling worldwide, has been categorized as “vulnerable” in the International Union for Conservation of Nature Red List.
    • In total, there are about 7,500 snow leopards left in the world, out of which 500 are in India.
    • However, experts state that the population of snow leopards is between 200-300 in Ladakh alone.

    Black-necked Crane

    • The black-necked crane is found in eastern Ladakh’s high-altitude wetlands and marshes.
    • It is mostly listed as Near Threatened on the International Union for Conservation of Nature (IUCN) red list.
    • Considered loyal couples, they are only found in Ladakh’s Changthang region. They arrive in March for breeding and migrate by October end or early November.
    • It was the State bird of J&K before August 5, 2019.

    About Ladakh

    • Ladakh was established as a union territory of India on 31 October 2019, following the passage of the Jammu and Kashmir Reorganization Act.
    • Prior to that, it was part of the Jammu and Kashmir state. Ladakh is the largest and the second least populous union territory of India.
    • It extends from the Siachen Glacier in the Karakoram range to the north to the main Great Himalayas to the south.
    • The eastern end, consisting of the uninhabited Aksai Chin plains, is claimed by the Indian Government as part of Ladakh and has been under Chinese control since 1962.
    • The largest town in Ladakh is Leh, followed by Kargil, each of which headquarters is a district.
    • The Leh district contains the Indus, Shyok and Nubra river valleys. The Kargil district contains the Suru, Dras and Zanskar river valleys.

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  • Indian Army Updates

    Exercise ZAPAD 2021

    Prelims Only | Security Issues | Mains Paper 3: Various Security Forces, Agencies & Their Mandates

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: ZAPAD 2021

    Mains level: Not Much

    A contingent of 200 Army personnel will participate in the multinational Exercise ZAPAD 2021 being held at Nizhniy, Russia.

    ZAPAD 2021

    • ZAPAD is one of the theatre-level exercises of Russian armed forces and will focus primarily on operations against terrorists.
    • The NAGA Battalion group participating in the exercise will feature an all arms combined task force.
    • The exercise aims to enhance military and strategic ties amongst the participating nations while they plan and execute this exercise.
    • In all, 17 countries have been invited by Russia for the exercise. Of these nine are Participating countries which include Mongolia, Armenia, Kazakhstan, Tajikistan, Kyrgyzstan, Serbia, Russia, India, and Belarus.
    • The other eight countries are Observers which include Pakistan, China, Vietnam, Malaysia, Bangladesh, Myanmar, Uzbekistan, and Sri Lanka.

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    Must read:

    [Prelims Spotlight] Various Defence Exercises in News

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  • Zoonotic Diseases: Medical Sciences Involved & Preventive Measures

    West Nile Virus outbreak in Russia

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: West Nile Virus

    Mains level: NA

    Russia warned of a possible increase in West Nile virus infections this autumn as mild temperatures and heavy precipitation create favorable conditions for the mosquitos that carry it.

    West Nile virus (WNV)

    • WNV is mainly transmitted through mosquito bites and can lead to fatal neurological diseases in humans, although most people infected never develop any symptoms.
    • Cases of WNV occur during mosquito season, which starts in the summer and continues through fall.

    Its origin

    • Originally from Africa, the WNV has spread to Europe, Asia, and North America.
    • It was first isolated in a woman in the West Nile district of Uganda in 1937.
    • It was identified in birds in the Nile delta region in 1953.
    • Before 1997, WNV was not considered pathogenic for birds.
    • Human infections attributable to WNV have been reported in many countries for over 50 years.

    Symptoms

    • Infected persons usually have no symptoms or mild symptoms.
    • Some of the symptoms include fever, headache, body aches, skin rash, and swollen lymph glands.
    • They can last a few days to several weeks and usually, go away on their own.
    • Prolonged illness may cause inflammation of the brain, called encephalitis, or inflammation of the tissue that surrounds the brain and spinal cord, called meningitis.

    Treatment

    • There is no vaccine against the virus in humans although one exists for horses, the WHO says.

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  • Oil and Gas Sector – HELP, Open Acreage Policy, etc.

    Leaded Petrol is officially eradicated

    Prelims Only | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Leaded Petrol

    Mains level: Not Much

    The use of leaded petrol has been eradicated from the globe, a/c to the UN Environment Programme (UNEP).

    What is Leaded Petrol?

    • Tetraethyl-lead (TEL) is a petro-fuel additive, first being mixed with petrol beginning in the 1920s as a patented octane rating booster that allowed engine compression to be raised substantially.
    • This in turn caused increased vehicle performance and fuel economy.
    • The practice of adding tetraethyl lead to petrol had spread widely to all countries soon after its anti-knock and octane-boosting properties were discovered.
    • TEL is still used as an additive in some grades of aviation gasoline.

    Issues with leaded petrol

    • Lead is toxic, affects multiple body systems and is particularly harmful to young children.
    • It affects the brain, liver, kidneys, and bones. Lead is measured in the blood to understand exposure.
    • Lead in bone is released into the blood during pregnancy and becomes a source of exposure to the developing foetus.
    • More recent research has indicated that lead can damage the infant brain even at blood levels as low as 5 microunits per decilitre (μ/dl).

    India’s tryst with leaded petrol

    • India was among those countries that took early action to phase out leaded petrol. The process of phase down that had started in 1994, got completed in 2000.
    • Initially, low-leaded petrol was introduced in Delhi, Mumbai, Kolkata and Chennai in 1994, followed by unleaded petrol in 1995.
    • The entire country got low-leaded petrol in 1997 while leaded fuel was banned in the National Capital Territory of Delhi.
    • The final introduction of unleaded petrol in the entire country was mandated in April 2000.
    • This decision was also catalyzed by the Supreme Court order that had directed the introduction of unleaded petrol to enable the adoption of catalytic converters in petrol cars.

    Significance of phasing out

    • It is a milestone that will prevent more than 1.2 million premature deaths and save world economies over $2.4 trillion annually.
    • It has taken 100 years to stop the use of leaded fuel finally.

    Try answering this PYQ:

    Q.Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? (CSP 2012)

    1. Smelting units
    2. Pens pencils
    3. Paints
    4. Hair oils and cosmetics

    Select the correct answer using the codes given below:

    (a) 1, 2 and 3 only

    (b) 1 and 3 only

    (c) 2 and 4 only

    (d) 1, 2, 3 and 4

     

    Post your answers here.

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  • Innovations in Biotechnology and Medical Sciences

    What is Milky Sea Phenomenon?

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Milky Sea Phenomenon

    Mains level: NA

    Some researchers would use satellites to study the elusive milky sea phenomenon.

    What is the Milky Sea?

    • Milky seas, also called mareel, is a luminous phenomenon in the ocean in which large areas of seawater appear to glow translucently (in varying shades of blue).
    • Such occurrences glow brightly enough at night to be visible from satellites orbiting Earth.
    • They are a rare nocturnal phenomenon in which the ocean’s surface emits a steady bright glow.

    Why do they glow?

    • Luminous bacteria cause the particles they colonize to glow.
    • The purpose of this glow could be to attract fish that eat them.
    • These bacteria thrive in the guts of fishes, so when their populations get too big for their main food supply, a fish’s stomach makes a great second option.

    How do they occur?

    • It is typically caused by Noctiluca scintillans (popularly known as “sea sparkle”), a dinoflagellate that glows when disturbed and is found in oceans throughout much of the world.
    • Once their population gets large enough – about 100 million individual cells per millilitre of water – a sort of internal biological switch is flipped and they all start glowing steadily.

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  • Modern Indian History-Events and Personalities

    PM inaugurates Jallianwala Bagh Memorial

    Prelims Only | | Mains Paper 1: Modern Indian History

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Jallianwala Bagh Massacre

    Mains level: Not Much

    Prime Minister has virtually inaugurated the renovated Jallianwala Bagh complex in Amritsar.

    What led to Jallianwala Bagh Massacre?

    Protesting the contentious Rowlatt Act

    • The act officially known as the Anarchical and Revolutionary Crimes Act, 1919 was passed in 1919 by the Imperial Legislative Council.
    • It had authorized the British government to arrest anybody suspected of terrorist activities.
    • It also authorized the government to detain such people arrested for up to 2 years without trial.
    • It empowered the police to search a place without a warrant. It also placed severe restrictions on the freedom of the press.
    • The primary intention of colonial govt. was to repress the growing nationalist movement in the country.
    • The British were also afraid of a Ghadarite revolution in Punjab and the rest of the country.

    The day

    • The massacre took place on 13 April 1919 when troops of the British Indian Army under the command of Col. Reginald Dyer fired rifles into a crowd of Indians.
    • The civilians had assembled for a peaceful protest to condemn the arrest and deportation of two national leaders, Satya Pal and Saifuddin Kitchlew.
    • Dyer without warning ordered his troops to fire at the unarmed crowd which included children as well.
    • The indiscriminate firing went on for about 10 minutes which resulted in the deaths of at least 1000 people and injured more than 1500 people.

    Aftermath

    • In protest against the massacre, Rabindranath Tagore gave up his knighthood.
    • Gandhiji relinquished his title ‘Kaiser-e-hind’ bestowed on him by the British for his services during the Boer War in South Africa.
    • Michael O’Dwyer, the then Lieutenant-Governor of Punjab, who had approved the actions of Dyer, was assassinated by Udham Singh in London in 1940 as revenge against the massacre.
    • The heroic treatment of Dyer’s heinous act again set a benchmark of colonial arrogance.

    Hunter Commission for inquiry

    • In October 1919 the Secretary of State for India, Edwin Montagu, ordered the formation of a committee of inquiry into the events in Punjab.
    • Referred to as the Disorders Inquiry Committee, it was later more widely known as the Hunter Commission (Not to be confused with Hunter Education Commission).
    • Still, there are long-standing demands in India that Britain should apologize for the massacre.

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  • Tuberculosis Elimination Strategy

    BCG vaccine: 100 years and counting

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: BCG, TB and other respiratory diseases

    Mains level: Not Much

    The first use of BCG (Bacillus Calmette-Guerin), the vaccine against tuberculosis (TB) in humans have been completed for 100 years.

    What is TB?

    • TB is a very ancient disease and has been documented to have existed in Egypt as early as 3000 BC.
    • It is caused by a bacterium called Mycobacterium tuberculosis, belonging to the Mycobacteriaceae family consisting of about 200 members.
    • Some of these cause diseases like TB and leprosy in humans and others infect a wide range of animals. Mycobacteria are also widely dispersed in the environment.
    • In humans, TB most commonly affects the lungs (pulmonary TB), but it can also affect other organs (extra-pulmonary TB).

    Yet not eliminated

    • Other historically dreaded diseases like smallpox, leprosy, plague, and cholera have been either eradicated or controlled to a large extent due to advances in science and technology.
    • However, TB continues to be a major public health problem in the world.
    • According to the WHO’s Global TB Report, 10 million people developed TB in 2019 with 1.4 million deaths. India accounts for 27% of these cases.

    BCG Vaccine for TB

    • BCG was developed by two Frenchmen, Albert Calmette and Camille Guerin, by modifying a strain of Mycobacterium Bovis (that causes TB in cattle) till it lost its capacity to cause disease while retaining its property to stimulate the immune system.
    • It was first used in humans in 1921.
    • Currently, BCG is the only licensed vaccine available for the prevention of TB.
    • It is the world’s most widely used vaccine with about 120 million doses every year and has an excellent safety record.

    BCG in India

    • In India, BCG was first introduced on a limited scale in 1948 and became a part of the National TB Control Programme in 1962.
    • India is committed to eliminating TB as a public health problem by 2025.

    Effectiveness of BCG

    • One intriguing fact about BCG is that it works well in some geographic locations and not so well in others.
    • Generally, the farther a country is from the equator, the higher is the efficacy.
    • In children, BCG provides strong protection against severe forms of TB.
    • This protective effect appears to wane with age and is far more variable in adolescents and adults, ranging from 0–80%.
    • In addition to its primary use as a vaccine against TB, BCG also protects against respiratory and bacterial infections of newborns and other mycobacterial diseases like leprosy and Buruli’s ulcer.
    • It is also used as an immunotherapy agent in cancer of the urinary bladder and malignant melanoma.

    Try answering this PYQ:

    What is the importance of using pneumococcal conjugate vaccines in India? (CSP 2020)

    1. These vaccines are effective against pneumonia as well as meningitis and sepsis.
    2. Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.
    3. These vaccines have no side effects and cause no allergic reactions

    Select the correct answer using the given code below:

    (a) 1 only

    (b) 1 and 2 only

    (c) 3 only

    (d) 1, 2 and 3

     

    Post your answers here.

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  • Global Geological And Climatic Events

    Hurricane Ida makes landfall in US

    Prelims Only | Enviro & Biodiversity | Mains Paper 1: Geographical Features & Their Location

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Hurricane (Tropical Cycolnes)

    Mains level: Impact of frequent cyclonic landfalls

    Hurricane Ida has made landfall in Louisiana, US as an extremely dangerous Category 4 storm.

    What is a Hurricane?

    • A hurricane is a tropical cyclone that occurs in the Atlantic Ocean and the northeastern Pacific Ocean.
    • And a typhoon occurs in the northwestern Pacific Ocean; in the south Pacific or the Indian Ocean, comparable storms are referred to simply as “tropical cyclones” or “severe cyclonic storms”.

    What are Tropical Cyclones?

    A Tropical cyclone is an intense circular storm that originates over warm tropical oceans and is characterized by low atmospheric pressure, high winds, and heavy rain.

    • Cyclones are formed over slightly warm ocean waters. The temperature of the top layer of the sea, up to a depth of about 60 meters, need to be at least 28°C to support the formation of a cyclone.
    • This explains why the April-May and October-December periods are conducive for cyclones.
    • Then, the low level of air above the waters needs to have an ‘anticlockwise’ rotation (in the northern hemisphere; clockwise in the southern hemisphere).
    • During these periods, there is an ITCZ in the Bay of Bengal whose southern boundary experiences winds from west to east, while the northern boundary has winds flowing east to west.
    • Once formed, cyclones in this area usually move northwest. As it travels over the sea, the cyclone gathers more moist air from the warm sea which adds to its heft.

    Try this question from CSP 2020:

    Q.Consider the following statements:

    1. Jet Streams occur in the Northern Hemisphere only.
    2. Only some cyclones develop an eye.
    3. The temperature inside the eye of a cyclone is nearly 10 degree Celsius lesser than that of the surroundings.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 and 3 only

    (c) 2 only

    (d) 1 and 3 only

     

    Post your answers here.

    Destruction caused

    • Strong Winds: Cyclones are known to cause severe damage to infrastructure through high-speed winds.
    • Torrential rains and inland flooding: Torrential rainfall (more than 30 cm/hour) associated with cyclones is another major cause of damages. Unabated rain gives rise to unprecedented floods.
    • Storm Surge: A Storm surge can be defined as an abnormal rise of sea level near the coast caused by a severe tropical cyclone.

    Some (unexpected) benefits

    Although Tropical cyclones are known for the destruction they cause, when they strike they also bestow certain benefits to the climatic conditions of that area such as

    • Relieve drought conditions
    • Carry heat and energy away from the tropics and transport it towards temperate latitudes
    • Maintain a relatively stable and warm temperature worldwide

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    Also read:

    [Burning Issue] Tropical Cyclones and India

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  • Wetland Conservation

    Places in news: Pantanal Wetlands

    National Parks/WSPrelims Only | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Pantanal Wetlands

    Mains level: Not Much

    Pantanal, the world’s largest tropical wetlands is facing a severe crisis due to wildfires and climate change.

    Pantanal Wetlands

    • The Pantanal is a natural region encompassing the world’s largest tropical wetland area, and the world’s largest flooded grasslands.
    • It is located mostly within the Brazilian and extends to some portions of Bolivia and Paraguay.
    • It sprawls over an area estimated at between 140,000 and 195,000 square kilometer.
    • Roughly 80% of the Pantanal floodplains are submerged during the rainy seasons, nurturing a biologically diverse collection of aquatic plants and helping to support a dense array of animal species.

    Risks faced

    • Unlike the Amazon rainforest, vegetation in the Pantanal has evolved to coexist with fire — many plant species there require the heat from fires to germinate.
    • Often caused by lightning strikes, those natural fires spring up at the end of the dry season, but the surrounding floodplains prevent them from spreading.
    • What’s different now is the drought, contributing further to the unusually dry conditions and exacerbating the fire risk.

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  • Modern Indian History-Events and Personalities

    Making of the Modern City of Kolkata

    Prelims Only | Trivia | Mains Paper 1: Modern Indian History

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Kolkata City

    Mains level: Urban development of colonial period

    A 2003 judgment by the Calcutta High Court generates discussion of the city’s age, its date of founding, and Job Charnock, whom many credits for having “found” the city of Calcutta.

    Calcutta: Who founded the city?

    Nobody.

    • A place then called Kalikatah was an important religious centre due to the existence of the Kali temple in the adjacent village of Kalighat.
    • The first literary reference to the site is found in Bipradas Pipilai’s magnum opus Manasa Mangala which dates back to 1495.
    • Abul Fazl’s Ain-I-Akbari dating 1596 also mentions the place.
    • The Sabarna Roy Choudhury family was granted the Jagirdari of Kalikatah by Emperor Jehangir in 1608.

    Who was Job Charnock?

    • Job Charnock (1630–1693) was an English administrator with the East India Company.
    • He was once regarded as the founder of the city of Kolkata (formerly Calcutta).
    • However, this view is challenged, and in 2003 the Calcutta High Court declared that he ought not to be regarded as the founder.
    • Charnock was entrusted with procuring the Company’s saltpetre and appointed to the centre of the trade, Patna in Bihar in1659.

    Beginning of Urbanization

    • The establishment of the Government House in 1767 and the Lottery Commission in 1817 were the other important developments in the city’s history that gave its urban landscape more defined contours.
    • This commission was entirely responsible for the setting up of the city’s roads, streets and lanes.
    • Some markers of urban settlements include planned roads, water supply and transport.
    • The establishment of these in the early 19th century was responsible for making Calcutta the great city that it eventually became.

    Significance of Kolkata

    One of the most significant developments that gave the city a semblance of urban formation occurred in 1756 when the Nawab of Bengal Siraj ud-Daulah lay siege to Calcutta.

    • This was in retaliation for the British East India Company engaging in unauthorized development of the structure that is now known as Fort William.
    • The East India Company was defeated in a decisive battle, making them realise the vulnerability of the fort.
    • Post 1757 the fort was remade and fortified with enhanced protection, the construction was exceptionally well done.
    • It was really this attack on Fort William, a bastion of the British and other Europeans living there, that changed the map of Calcutta.
    • The Europeans who used to primarily lived inside the fort—the European merchants, the administrators etc—started moving out.
    • They knew that if there was an attack, there was infrastructure to save them. That was European Calcutta, what we call ‘White Town’.

    Hey! We won’t let you move away without answering this PYQ:

    Wellesley established the Fort William College at Calcutta because (CSP 2020):

    (a) He was asked by the board of directors at London to do so

    (b) He wanted to revive interest in oriental learning in India

    (c) He wanted to provide William Carey and his associates with employment

    (d) He wanted to train British civilians for administrative purposes in India.

     

    Post your answers here:

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