đŸ’„Join UPSC 2027,2028 Mentorship (July Batch) + XFactor Notes & Microthemes PDF
Talk to Mentor

Civilsdaily

Login

Type: Prelims Only

  • International Space Agencies – Missions and Discoveries

    Russia’s Nauka Module for ISS

    27 July 2021 | Prelims Only | Science and Technology
    Mains GS3: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: International Space Station (ISS), Nauka

    Mains level: Not Much

    Pirs, a Russian module on the International Space Station (ISS) used as a docking port for spacecraft and as a door for cosmonauts to go out on spacewalks. In its place, Russia’s space agency Roscosmos will be attaching a significantly larger module called Nauka.

    What does Russia’s new Nauka module do?

    • Nauka, which is 42 feet long and weighs 20 tonnes, was supposed to be launched as early as 2007, as per the ISS’s original plan.
    • Nauka — meaning “science” in Russian — is the biggest space laboratory Russia has launched to date, and will primarily serve as a research facility.
    • It is also bringing to the ISS another oxygen generator, a spare bed, another toilet, and a robotic cargo crane built by the European Space Agency (ESA).
    • The new module was sent into orbit using a Proton rocket — the most powerful in Russia’s space inventory — on July 21 and will take eight days to reach the ISS.

    What kind of research goes on at the International Space Station?

    • A space station is essentially a large spacecraft that remains in low-earth orbit for extended periods of time.
    • It is like a large laboratory in space and allows astronauts to come aboard and stay for weeks or months to carry out experiments in microgravity.
    • For over 20 years since its launch, humans have continuously lived and carried out scientific investigations on the $150 billion ISS under microgravity conditions, being able to make breakthroughs in research not possible on Earth.

    Back2Basics: International Space Station (ISS)

    • The International Space Station, which launched its first piece in 1998, is a large spacecraft that orbits around the Earth and is home to the astronauts.
    • The ISS is currently the only active space station in the earth’s orbit.
    • The first crew on the space station arrived on November 2, 2000.
    • The space station is home to a minimum of six astronauts, with two bathrooms, a gymnasium, and a big bay window.
    • It is a joint project between five participating space agencies -NASA (USA), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada).

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Wildlife Conservation Efforts

    Thane Creek Flamingo Sanctuary proposed as Ramsar Site

    27 July 2021 | Prelims Only | Environment
    Mains GS3: GS3-18.Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Thane Creek Flamingo Sanctuary

    Mains level: Not Much

    The Mumbai Metropolitan Region is likely to get its first Ramsar site at the Thane Creek Flamingo Sanctuary.

    Thane Creek Flamingo Sanctuary

    • The Maharashtra Government has declared the area along the western bank of Thane Creek as the “Thane Creek Flamingo Sanctuary” since 2015.
    • It is Maharashtra’s second marine sanctuary after the Malvan sanctuary.
    • It is recognized as an “Important Bird Area” by the Bombay Natural History Society.

    About Ramsar Convention

    • The Convention on Wetlands of International Importance (better known as the Ramsar Convention) is an international agreement promoting the conservation and wise use of wetlands.
    • It is the only global treaty to focus on a single ecosystem.
    • The convention was adopted in the Iranian city of Ramsar in 1971 and came into force in 1975.
    • Traditionally viewed as a wasteland or breeding ground of disease, wetlands actually provide fresh water and food and serve as nature’s shock absorber.
    • Wetlands, critical for biodiversity, are disappearing rapidly, with recent estimates showing that 64% or more of the world’s wetlands have vanished since 1900.
    • Major changes in land use for agriculture and grazing, water diversion for dams and canals, and infrastructure development are considered to be some of the main causes of loss and degradation of wetlands.

    What does one mean by Ramsar Site?

    • A Ramsar Site is a wetland area designated to be of international importance under the Ramsar Convention.
    • It provides the framework for national action and international cooperation for the conservation and wise use of wetlands and their resources.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Coal and Mining Sector

    [pib] Gold Reserves in India

    27 July 2021 | Prelims Only | Economics
    Mains GS1: GS1-12.Distribution of key Natural Resources (world, South Asia and Indian subcontinent)

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Gold Reserves in India

    Mains level: Not Much

    The Minister of Mines and Coal has provided useful information regarding gold reserves in India.

    Gold Reserves in India

    • As per National Mineral Inventory data, the total reserves/resources of gold ore (primary) in the country have been estimated at 501.83 million tonnes as of 2015.
    • Out of these, 17.22 million tonnes were placed under the reserves category and the remaining 484.61 million tonnes were under the remaining resources category.
    • In India, the largest resources of gold ore (primary) are located in Bihar (44%) followed by Rajasthan (25%), Karnataka (21%), West Bengal (3%), Andhra Pradesh (3% ), Jharkhand (2 %).
    • The remaining 2% resources of ore are located in Chhattisgarh, Madhya Pradesh, Kerala, Maharashtra, and Tamil Nadu.

    Who takes up their mapping?

    • Geological Survey of India (GSI) is actively engaged in geological mapping followed by mineral exploration (survey) for various mineral commodities including gold.
    • GSI aims to identify potential mineral-rich zones and establish resources.
    • Every year, as per the approved annual Field Season Program, GSI takes up mineral exploration projects in various parts of the country for augmenting mineral resources.
    • Recently, GoI has amended the MEMC Rules to allow auction of composite license at G4 level for deep-seated minerals including Gold.

    Answer this PYQ in the comment box:

    Consider the following statements:

    1. In India, State Governments do not have the power to auction non -coal mines.
    2. Andhra Pradesh and Jharkhand do not have goldmines.
    3. Rajasthan has iron ore mines.

    Which of the statements given above is/are correct?

    (a) 1 and 2 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 3 only

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • International Space Agencies – Missions and Discoveries

    Moon-forming region seen around an exoplanet for the first time

    26 July 2021 | Prelims Only | Science and Technology
    Mains GS3: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Exoplanets

    Mains level: Core accretion

     

    Scientists for the first time have spotted a Moon-forming region around an exo-planet beyond our solar system.

    What are Exoplanets?

    • More than 4,400 planets have been discovered outside our solar system, called exoplanets.
    • Most orbit other stars, but free-floating exoplanets, called rogue planets, orbit the galactic center and are untethered to any star.
    • No circumplanetary discs had been found until now because all the known exoplanets resided in “mature” – fully developed – solar systems, except the two infant gas planets orbiting PDS 70.

    What is the new finding?

    • The researchers have detected a disc of swirling material accumulating around one of two newborn planets.
    • They were seen orbiting a young star called PDS 70, located a relatively close 370 light-years from Earth.
    • It is called a circumplanetary disc, and it is from these those moons are born.
    • The discovery offers a deeper understanding of the formation of planets and moons.

    Focus of the finding: Formation of disc

    • In our solar system, the impressive rings of Saturn, a planet around which more than 80 moons orbit, represent a relic of a primordial moon-forming disc.
    • The orange-colored star PDS 70, roughly the same mass as our Sun, is about 5 million years old– a blink of the eye in cosmic time.
    • The two planets are even younger. Both planets are similar (although larger) to Jupiter, a gas giant.
    • It was around one of the two planets, called PDS 70c, that a Moon-forming disc was observed.

    Observing birth of a moon: Core Accretion

    • Stars burst to life within clouds of interstellar gas and dust scattered throughout galaxies.
    • Leftover material spinning around a new star then coalesces into planets, and circumplanetary discs surrounding some planets similarly yield moons.
    • The dominant mechanism thought to underpin planet formation is called “core accretion”.
    • In this scenario, small dust grains, coated in ice, gradually grow to larger and larger sizes through successive collisions with other grains.
    • This continues until the grains have grown to a size of a planetary core, at which point the young planet has a strong enough gravitational potential to accrete gas which will form its atmosphere.
    • Some nascent planets attract a disc of material around them, with the same process that gives rise to planets around a star leading to the formation of moons around planets.
    • The disc around PDS 70c, with a diameter about equal to the distance of the Earth to the sun, possesses enough mass to produce up to three moons the size of Earth’s moon.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Water Management – Institutional Reforms, Conservation Efforts, etc.

    Microplastics Pollution in Ganga

    23 July 2021 | Prelims Only | Environment
    Mains GS3: GS3-18.Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Microplastic pollution

    Mains level: Water Pollution

     

    The Ganga is heavily polluted with microplastics at Varanasi, Haridwar, and Kanpur, Delhi-based non-profit Toxics Link claimed.

    What are Microplastics?

    • Microplastics are plastics that are less than 5 mm in size but are a major source of marine pollution.
    • Untreated sewage from many cities along the river’s course, industrial waste, and religious offerings wrapped in non-degradable plastics pile pollutants into the river as it flows through several densely populated cities.
    • The plastic products and waste materials released or dumped in the river break down and are eventually broken down into microparticles.
    • The rivers finally transport significantly large quantities downstream into the ocean, which is the ultimate sink of all plastics being used by humans.

    Microplastics in Ganga

    • They are non-degradable plastics that often entered the Ganga through industrial waste or packaging of religious offerings, its research found.
    • The density of population in the three cities also added to the problem because a large chunk of pollutants got directly discharged into the river by people living on the banks.
    • Among the three cities, the Toxics Link’s study found that sites at Varanasi showed the maximum load of microplastics in the water of the Ganga, as compared to the other two cities.
    • This might be due to cumulative downstream pollution as well as industrial and human activities.

    On a global high

    • The researchers tried to compare the microplastics concentration in Ganga water with similar studies on other rivers across the globe.
    • It included the Rhine in Europe, the Patapsco, Magothy, Rhode in North America, and the Elqui, Maipo, Biobio, and Maule in South America.
    • They found the Ganga microplastics pollution was much higher.
    • This was in spite of a higher per capita consumption of plastic in the European countries, North and South America, as compared to India.

    How does it impact people?

    • The Ganga is a source of water for not just drinking and bathing purposes but also for irrigation to a large extent.
    • Microplastics in river water, if ingested in humans or other organisms, can cause toxicity through various means.
    • Not only are these microplastics toxic themselves, they also have a tendency to absorb various toxins present in water, including harmful chemicals.
    • Although some of the effects of microplastics on public health are understood, a lot still needs to be done.

    Answer this PYQ in the comment box:

    Q. Why is there a great concern about the ‘microbeads’ that are released into the environment? (CSP 2019)

    (a) They are considered harmful to marine ecosystems.

    (b) They are considered to cause skin cancer in children.

    (c) They are small enough to be absorbed by crop plants in irrigated fields.

    (d) They are often found to be used as food adulterants.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Festivals, Dances, Theatre, Literature, Art in News

    Festival in news: Harela Festival

    22 July 2021 | Prelims Only | History
    Mains GS1: GS1-01.Indian Culture- Salient aspects of Art Forms, Literature and Architecture from ancient to modern times.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Harela Festival

    Mains level: Paper 1- Festivals in India

    Villagers across Uttarakhand celebrated Harela, a festival of greenery, peace, prosperity and environmental conservation.

    Harela Festival

    • Harela means ‘day of green’ and is celebrated in the month of Shravan (the fifth month of the Hindu lunar calendar) to worship Lord Shiva and Goddess Parvati.
    • People across Uttarakhand, especially the Kumaun region, associate greenery with prosperity.
    • The seeds of five to seven types of crops —  maize, til (sesame), urad (black gram), mustard, oats —  are sown in donas (bowl made of leaves) or ringalare (hill bamboo baskets) nine days before the festival.
    • They are harvested on the ninth day and distributed to neighbours, friends and relatives.
    • The flourish of the crops symbolizes prosperity in the year ahead.
    • People make clay statues of Lord Shiva and Goddess Parvati, known as Dikare, and worship them a day before the festival.
    • Harela is also linked to the Barahnaza system (12 types of crops), a crop diversification technique followed in the region.

    Answer this PYQ in the comment box:

    Q.Consider the following pairs:
    Tradition: State
    1. Chapchar Kut: festival Mizoram
    2. Khongjom Parba ballad: Manipur
    3. Thang Ta dance: Sikkim
    Which of the pairs given above is/are correct?

    (a) 1 only
    (b) 1 and 2
    (c) 3 only
    (d) 2 and 3

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Zoonotic Diseases: Medical Sciences Involved & Preventive Measures

    What is Monkey B virus?

    21 July 2021 | Prelims Only | Science and Technology
    Mains GS3: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Monkey B Virus

    Mains level: Zoonotic Diseases

    China has reported the first human death case with the Monkey B virus (BV).

    What is Monkey B virus?

    • The virus, initially isolated in 1932, is an alphaherpesvirus enzootic in macaques of the genus Macaca.
    • B virus is the only identified old-world-monkey herpes virus that displays severe pathogenicity in humans.

    Answer this question from our AWE initiative:

    There is been an increase in occurance of zoonotic human infectious diseases are zoonotic . Give reasons for this. Also suggest ways to contain and decrease the frequency of such events.(250 Words)

    How is it transmitted?

    • The infection can be transmitted via direct contact and exchange of bodily secretions of monkeys and has a fatality rate of 70 per cent to 80 per cent.
    • According to the Centre for Disease Control and Prevention, Macaque monkeys commonly have this virus, and it can be found in their saliva, feces, urine, or brain or spinal cord tissue.
    • The virus may also be found in cells coming from an infected monkey in a lab. B virus can survive for hours on surfaces, particularly when moist.

    When can a human get infected with B virus?

    • Humans can get infected if they are bitten or scratched by an infected monkey.

    Symptoms

    • Symptoms typically start within one month of being exposed to B virus but could appear in as little as three to seven days.
    • The first indications of B virus infection are typically flu-like symptoms such as fever and chills, muscle ache, fatigue and headache.
    • Following this, a person may develop small blisters in the wound or area on the body that came in contact with the monkey.
    • Some other symptoms of the infection include shortness of breath, nausea and vomiting, abdominal pain and hiccups.
    • As the disease progresses, the virus spreads to and causes inflammation (swelling) of the brain and spinal cord, leading to neurologic and inflammatory symptoms.

    Is there a vaccine against B virus?

    • Currently, there are no vaccines that can protect against B virus infection.

    Who are at higher risk for infection?

    • The virus might pose a potential threat to laboratory workers, veterinarians, and others who may be exposed to monkeys or their specimens.
    • To date, only one case has been documented of an infected person spreading the B virus to another person.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • International Space Agencies – Missions and Discoveries

    Near-Earth Asteroid Scout Mission

    20 July 2021 | Prelims Only | Science and Technology
    Mains GS3: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Near-Earth Asteroid Scout

    Mains level: Study of asteroids

    Last week, NASA announced that its new spacecraft, named NEA Scout, has completed all required tests and has been safely tucked inside the Space Launch System (SLS) rocket.

    For landing on Moon

    • NEA Scout is one of several payloads that will hitch a ride on Artemis I, which is expected to be launched in November.
    • Artemis I will be an uncrewed test-flight of the Orion spacecraft and SLS rocket.
    • Under the Artemis programme, NASA has aimed to land the first woman on the Moon in 2024 and also establish sustainable lunar exploration programs by 2030.

    What is NEA Scout?

    • Near-Earth Asteroid Scout, or NEA Scout, is a small spacecraft, about the size of a big shoebox. Its main mission is to fly by and collect data from a near-Earth asteroid.
    • It will also be America’s first interplanetary mission using special solar sail propulsion.
    • This type of propulsion is especially useful for small, lightweight spacecraft that cannot carry large amounts of conventional rocket propellant.
    • NEA Scout will use stainless steel alloy booms and deploy an aluminium-coated sail measuring 925 square feet.
    • The large-area sail will generate thrust by reflecting sunlight.
    • Energetic particles of sunlight bounce off the solar sail to give it a gentle, yet constant push.

    How will it study the asteroid?

    • NEA Scout is equipped with special cameras and can take pictures ranging from 50 cm/pixels to 10 cm/pixels.
    • It can also process the image and reduce the file sizes before sending them to the earth-based Deep Space Network via its medium-gain antenna.
    • The spacecraft will take about two years to cruise to the asteroid and will be about 93 million miles away from Earth during the asteroid encounter.

    Why should we study near-Earth asteroids?

    • Despite their size, some of these small asteroids could pose a threat to Earth.
    • Understanding their properties could help us develop strategies for reducing the potential damage caused in the event of an impact.
    • Scientists will use this data to determine what is required to reduce risk, increase effectiveness, and improve the design and operations of robotic and human space exploration.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • International Space Agencies – Missions and Discoveries

    Why does Mercury have such a big iron core?

    20 July 2021 | Prelims Only | Science and Technology
    Mains GS3: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Our planetary system

    Mains level: Not Much

    Researchers have developed a model showing that the density, mass and iron content of a Mercury’s core is influenced by its distance from the Sun’s magnetic field.

    About Mercury

    • Mercury is the first and the smallest planet in our solar system.
    • It is also the closest planet to Earth.
    • Like the other three terrestrial planets, Mercury contains a core surrounded by a mantle and a crust.
    • But unlike any other planet, Mercury’s core makes up a larger portion of the planet.
    • MESSENGER was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury’s chemical composition, geology, and magnetic field.
    • It was the analysis from the MESSENGER mission that tells: Mercury’s core is solid.

    Mystery over the core

    • It has long been known that Mercury’s core composition is made of liquid metal.
    • The core itself is about 3,600 km across. Surrounding that is a 600 km thick mantle.
    • And around that is the crust, which is believed to be 100-200 km thick.
    • The crust is known to have narrow ridges that extend for hundreds of kilometres.
    • This large core has long been one of the most intriguing mysteries about Mercury.

    Why does Mercury have a large core?

    • A new study reveals that the sun’s magnetism is the reason.
    • The sun’s magnetic field influences the density, mass, and iron content of Mercury’s core.
    • The four inner planets of our solar system—Mercury, Venus, Earth, and Mars—are made up of different proportions of metal and rock.
    • A gradient in which the metal content in the core drops off as the planets get farther from the sun.
    • The researchers explain how this happened by showing that the sun’s magnetic field controlled the distribution of raw materials in the early forming solar system.

    What are the key propositions?

    • During the early formation of the solar system, when a swirling dust storm and gas encircled the sun, iron’s grain was drawn toward the centre by the sun’s magnetic field.
    • At the time of planet formation from clumps of that dust and gas, planets nearer to the sun consolidated more iron into their centres than those farther away.
    • Scientists also found that the density and proportion of iron in the planet’s core correlate with the strength of the magnetic field around the sun during planetary formation.
    • Existing models on planetary formation were used to determine the speed at which gas and dust were pulled into the centre of our solar system during its formation.
    • The magnetic field that the sun would have generated as it burst into being and calculated how that magnetic field would draw iron through the dust and gas cloud.

    Cooling led solidification

    • As the early solar system began to cool, dust and gas that were not drawn into the sun started to clump together.
    • The clumps closer to the sun would have been exposed to a stronger magnetic field and thus would contain more iron than those farther away from the sun.
    • As the clumps coalesced and cooled into spinning planets, gravitational forces drew the iron into their core.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Global Geological And Climatic Events

    How the Moon ‘Wobble’ affects rising tides

    19 July 2021 | Prelims Only | Environment
    Mains GS1: GS1-15.Geographical features and their location- Changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Moon wobble

    Mains level: Moon wobble and climate change

    US coastlines will face increasing flooding in the mid-2030s due to a regular lunar cycle called the wobble effect that will magnify rising sea levels caused by climate change.

    What is the Moon Wobble?

    • The moon wobble is nothing but a regular swaying in the moon’s orbit.
    • It was first documented way back in 1728.
    • This wobble takes over an 18.6-year period to complete and continues in a cyclic fashion.

    How does this wobble occur?

    • High tides on this planet are caused mostly by the pull of the moon’s gravity on a spinning Earth. On most beaches, you would see two high tides every 24 hours.
    • The moon also revolves around the Earth about once a month, and that orbit is a little bit tilted.
    • moon’s orbital plane around the Earth is at an approximate 5-degree incline to the Earth’s orbital plane around the sun.
    • Because of that, the path of the moon’s orbit seems to fluctuate over time, completing a full cycle — sometimes referred to as a nodal cycle — every 18.6 years.
    • At certain points along the cycle, the moon’s gravitational pull comes from such an angle that it yanks one of the day’s two high tides a little bit higher, at the expense of the other.
    • This does not mean that the moon itself is wobbling, nor that its gravity is necessarily pulling at our oceans any more or less than usual.

    What impact does this wobble have on Earth?

    • Influences the ebb and flow of tides: The moon wobbles impacts the gravitational pull of the moon, and therefore, indirectly influences the ebb and flow of tides here on the Earth.
    • One half of the 18.6-year cycle suppresses the tides, which means that the high tides get lower, while the low tides get higher than normal.
    • Once this cycle completes, the situation flips—in the subsequent cycle, the tides are amplified, with high tides getting higher and low tides, lower.
    • The lunar cycle is expected to shift again by mid-2030, and in the coming phase, the tides will amplify once again.

    Moon wobble and climate change

    • The upcoming changes in the lunar cycle will pose a serious threat, as the amplified high tides coupled with the rising sea levels will make the risk of flooding far greater across all coastal regions of the globe.
    • The study predicts that the high tide-associated floods—also known as nuisance floods or sunny day floods—may occur in clusters that could last for months or even for longer periods!
    • This surge will be closely associated with the position of the Moon, Earth and the Sun.
    • When the Moon and Earth line up in specific ways with each other and the Sun, the resulting gravitational pull and the ocean’s corresponding response may leave city-dwellers coping with floods every day or two.

    Get an IAS/IPS ranker as your 1: 1 personal mentor