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

Type: Prelims Only

  • Wildlife Conservation Efforts

    What are Orans?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Orans, Sacred grooves

    Mains level: Not Much

    Oran Bachao Yatras are taking place in Rajasthan for the protection of orans or sacred groves facing the threat of destruction due to the land being allotted for renewable energy infrastructure and high-tension power lines.

    What are Orans?

    • Orans are Community Conserved Areas protected for their sacred values.
    • They include woodlots, pastures, orchards, sacred groves, and habitats usually centered around sources of water such as natural springs, rivulets, or artificially constructed ponds.
    • Additionally, there is usually a shrine dedicated to a local deity at the heart of an Oran.
    • Their traditional boundaries are based on landmarks or geographical milestones established by indigenous and agro-pastoral communities associated with them.
    • Orans are usually defined by a strong community-territory relationship and a well-functioning governance system.

    Reasons for the Yatra

    • Named after local deities and medieval warriors, orans hold religious and social significance as small forest patches in the middle of the mighty Thar desert.
    • Orans also form the natural habitat for India’s most critically endangered bird, the Great Indian Bustard (GIB), a protected species under the Wildlife Protection Act, which is also the State bird of Rajasthan.
    • GIBs have died during the last few years because of collision with power lines, making this the most significant threat to the majestic birds.

    Back2Basics: Sacred Grooves

    • Sacred groves of India are forest fragments of varying sizes, which are communally protected, and which usually have a significant religious connotation for the protecting community.
    • It usually consists of a dense cover of vegetation including climbers, herbs, shrubs and trees, with the presence of a village deity and is mostly situated near a perennial water source.
    • Sacred groves are considered to be symbols of the primitive practice of nature worship and support nature conservation to a great extent.
    • The introduction of the protected area category community reserves under the Wild Life (Protection) Amendment Act, 2002 has introduced legislation for providing government protection to community-held lands, which could include sacred groves.

    Historical references

    • Indian sacred groves are often associated with temples, monasteries, shrines, pilgrimage sites, or with burial grounds.
    • Historically, sacred groves find their mentions in Hindu, Jain and Buddhist texts, from sacred tree groves in Hinduism to sacred deer parks in Buddhism for example.
    • Sacred groves may be loosely used to refer to natural habitat protected on religious grounds.
    • Other historical references to sacred groves can be obtained in Vrukshayurveda an ancient treatise, ancient classics such as Kalidasa’s Vikramuurvashiiya.
    • There has been a growing interest in creating green patches such as Nakshatravana

    Regulation of activities in Sacred Grooves

    • Hunting and logging are usually strictly prohibited within these patches.
    • Other forms of forest usage like honey collection and deadwood collection are sometimes allowed on a sustainable basis.
    • NGOs work with local villagers to protect such groves.
    • Traditionally, and in some cases even today, members of the community take turns to protect the grove.

    Threats to such grooves

    • Threats to the groves include urbanization, and over-exploitation of resources.
    • While many of the groves are looked upon as abode of Hindu deities, in the recent past a number of them have been partially cleared for construction of shrines and temples.

    Total grooves in India

    • Around 14,000 sacred groves have been reported from all over India, which act as reservoirs of rare fauna, and more often rare flora, amid rural and even urban settings.
    • Experts believe that the total number of sacred groves could be as high as 100,000.
    • They are called by different names in different states:
    1. Sarna in Bihar
    2. Dev Van in Himachal Pradesh
    3. Devarakadu in Karnataka
    4. Kavu in Kerala
    5. Dev in Madhya Pradesh
    6. Devarahati or Devarai in Maharashtra
    7. Lai Umang in Maharashtra
    8. Law Kyntang or Asong Khosi in Meghalaya
    9. Kovil Kadu or Sarpa Kavu in Tamil Nadu

     

     

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  • Animal Husbandry, Dairy & Fisheries Sector – Pashudhan Sanjivani, E- Pashudhan Haat, etc

    What is Purse Seine Fishing?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level:  Purse seine fishing

    Mains level: Not Much

    seine

    The Centre has told the Supreme Court that a ban imposed by certain coastal States on purse seine fishing, which is known to disadvantage endangered species, is not justified.

     Purse seine fishing

    • It uses a large vertical net to surround dense shoals of pelagic or midwater fish in the open ocean, and then draws in the edges like tightening the cords of a drawstring purse.
    • A vertical net ‘curtain’ is used to surround the school of fish, the bottom of which is then drawn together to enclose the fish, rather like tightening the cords of a drawstring purse.
    • It is deployed widely on India’s western coasts,

    What is the issue?

    • This mode of fishing is prohibited by Tamil Nadu, Kerala, Puducherry, Odisha, Dadra and Nagar Haveli and Daman and Diu Andaman and Nicobar Islands in their respective territorial waters of up to 12 nautical miles.
    • However, states like Gujarat, Andhra Pradesh, Goa, Karnataka, and West Bengal have not imposed any such ban on purse seine fishing.

    Why states are divided over this?

    • In some States, it is linked to concerns about the decreasing stock of small, pelagic shoaling fish such as sardines, mackerel, anchovies and trevally on the western coasts.
    • The scientific community argues that climatic conditions, including the El Nino phenomenon, are responsible for the declining catch of such fish in the last ten years.
    • Fishermen using traditional methods have placed the blame squarely on the rise of purse seine fishing.
    • They fear a further fall in the availability of these small fish if the ban is lifted.

    How does the Centre see this plan?

    • The Fisheries Department of the Union government has recommended the lifting of the ban on purse seine fishing.
    • The expert panel has said that this mode of fishing has “per se has not resulted in any serious resource depletion so far, given the available evidence”.
    • It recommended purse seiners to fish in territorial waters and the Indian Exclusive Indian Exclusive Economic Zone (EEZ) subject to certain conditions.

    Way ahead

    • There should be a national management plan on purse seine fisheries.
    • Partial ban in some states may put fishermen at disadvantage in other states.

     

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  • Higher Education – RUSA, NIRF, HEFA, etc.

    [pib] The Urban Learning Internship Programme (TULIP)

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: TULIP Program

    Mains level: Not Much

    tulip

    More than 25,000 internship opportunities have been advertised under the TULIP programme so far.

    TULIP Program

    • TULIP is a portal jointly developed by the Ministry of HRD, Ministry of Housing & Urban Affairs, and All India Council for Technical Education (AICTE).
    • It helps reap the benefits of India’s demographic dividend as it is poised to have the largest working-age population in the world in the coming years.
    • It helps enhance the value-to-market of India’s graduates and help create a potential talent pool in diverse fields like urban planning, transport engineering, environment, municipal finance etc.
    • It furthers the Government’s endeavors to boost community partnership and government-academia-industry-civil society linkages.

    Why need such a program?

    • India has a substantial pool of technical graduates for whom exposure to real-world project implementation and planning is essential for professional development.
    • General education may not reflect the depth of productive knowledge present in society.
    • Instead of approaching education as ‘doing by learning,’ our societies need to reimagine education as ‘learning by doing.’

     

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  • GI(Geographical Indicator) Tags

    GI in news: Joynagar Moa

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Joynagar Moa

    Mains level: NA

    moa

    The Joynagar Moa, the popular Bengal sweet got 10 year extension for its Geographical Indication (GI) tag.

    Joynagar Moa

    • The moa is a popped-rice ball held together with fresh date-palm jaggery, extracted from the beginning of December till the end of February.
    • Its manufacture is so synonymous with Joynagar, a settlement on the outskirts of Kolkata, that it earned the Geographical Indication tag of Joynagar Moa in 2015.

    How is it made?

    • A moa is made with khoi (puffed rice). The best ones are made with khoi from a rice variety known as kanakchur.
    • It uses cardamom and Bengal’s legendary nolen gur (a liquid jaggery made from date palms and found only in winter).

    Back2Basics: Geographical Indication (GI)

    • A GI is a sign used on products that have a specific geographical origin and possess qualities or a reputation that are due to that origin.
    • Nodal Agency: Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry
    • India, as a member of the World Trade Organization (WTO), enacted the Geographical Indications of Goods (Registration and Protection) Act, 1999 w.e.f. September 2003.
    • GIs have been defined under Article 22 (1) of the WTO Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS) Agreement.
    • The tag stands valid for 10 years.

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  • Coastal Zones Management and Regulations

    Kerala government publishes map for people to seek exemption from ESZ

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Eco-sensitive buffer Zones (ESZs)

    Mains level: Read the attached story

    The Kerala government has published a forest department map that better reflects the block and plot-wise details of localities that could potentially fall under the Supreme Court-suggested one-km ecologically sensitive buffer zone (ESZ) around forests if imposed.

    What are the Eco-sensitive Zones (ESZs)?

    • Eco-Sensitive Zones (ESZs) or Ecologically Fragile Areas (EFAs) are areas notified by the MoEFCC around Protected Areas, National Parks and Wildlife Sanctuaries.
    • The purpose of declaring ESZs is to create some kind of “shock absorbers” to the protected areas by regulating and managing the activities around such areas.
    • They also act as a transition zone from areas of high protection to areas involving lesser protection.

    How are they demarcated?

    • The Environment (Protection) Act, 1986 does NOT mention the word “Eco-Sensitive Zones”.
    • However, Section 3(2)(v) of the Act, says that Central Government can restrict areas in which any industries, operations or processes or class of industries, operations or processes shall be carried out or shall not, subject to certain safeguards.
    • Besides Rule 5(1) of the Environment (Protection) Rules, 1986 states that central government can prohibit or restrict the location of industries and carrying on certain operations or processes on the basis of certain considerations.
    • The same criteria have been used by the government to declare No Development Zones (NDZs).

    Defining its boundaries

    • An ESZ could go up to 10 kilometres around a protected area as provided in the Wildlife Conservation Strategy, 2002.
    • Moreover, in the case where sensitive corridors, connectivity and ecologically important patches, crucial for landscape linkage, are beyond 10 km width, these should be included in the ESZs.
    • Further, even in the context of a particular Protected Area, the distribution of an area of ESZ and the extent of regulation may not be uniform all around and it could be of variable width and extent.

    Activities Permitted and Prohibited

    • Permitted: Ongoing agricultural or horticultural practices, rainwater harvesting, organic farming, use of renewable energy sources, and adoption of green technology for all activities.
    • Prohibited: Commercial mining, saw mills, industries causing pollution (air, water, soil, noise etc), the establishment of major hydroelectric projects (HEP), commercial use of wood, Tourism activities like hot-air balloons over the National Park, discharge of effluents or any solid waste or production of hazardous substances.
    • Under regulation: Felling of trees, the establishment of hotels and resorts, commercial use of natural water, erection of electrical cables, drastic change of agriculture system, e.g. adoption of heavy technology, pesticides etc, widening of roads.

    What is the recent SC judgment that has caused an uproar in Kerala?

    • On June 3, a three-judge bench of the Supreme Court heard a PIL that sought to protect forest lands in the Nilgiris in Tamil Nadu, but was later expanded to cover the entire country.
    • In its judgment, the court while referring to the 2011 guidelines as “reasonable”, directed all states to have a mandatory 1-km ESZ from the demarcated boundaries of every protected area.
    • It also stated that no new permanent structure or mining will be permitted within the ESZ.
    • If the existing ESZ goes beyond 1-km buffer zone or if any statutory instrument prescribes a higher limit, then such extended boundary shall prevail, the court, as per the Live Law report.

    Why are people protesting against it?

    • There is a high density of human population near the notified protected areas.
    • Farmer’s groups and political parties have been demanding that all human settlements be exempt from the ESZ ruling.
    • The total extent of the wildlife sanctuaries in Kerala is eight lakh acres.
    • If one-km of ESZ is demarcated from their boundaries, around 4 lakh acres of human settlements, including farmlands, would come within that purview.

     

    Try this PYQ

    With reference to ‘Eco-Sensitive Zones’, which of the following statements is/are correct?

    1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972
    2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities, in those zones except agriculture.

    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

     

    Post your answers here.

     

     

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  • Minimum Support Prices for Agricultural Produce

    Centre rules out an increase in MSP for Cotton

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: MSP, Cotton

    Mains level: Not Much

    While cotton farmers in several States have demanded an increase in the minimum support price (MSP) of the crop, the Centre has said that it is watching the cotton production scenario and decide accordingly.

    What is MSP?

    • The MSP assures the farmers of a fixed price for their crops, well above their production costs.
    • MSP, by contrast, is devoid of any legal backing. Access to it, unlike subsidized grains through the PDS, isn’t an entitlement for farmers.
    • They cannot demand it as a matter of right. It is only a government policy that is part of administrative decision-making.
    • The Centre currently fixes MSPs for 23 farm commodities based on the Commission for Agricultural Costs and Prices (CACP) recommendations.

    Fixing of MSPs

    • The CACP considered various factors while recommending the MSP for a commodity, including the cost of cultivation.
    • It also takes into account the supply and demand situation for the commodity; market price trends (domestic and global) and parity vis-à-vis other crops; and implications for consumers (inflation), environment (soil and water use) and terms of trade between agriculture and non-agriculture sectors.

    What changed with the 2018 budget?

    • The Budget for 2018-19 announced that MSPs would henceforth be fixed at 1.5 times of the production costs for crops as a “pre-determined principle”.
    • Simply put, the CACP’s job now was only to estimate production costs for a season and recommend the MSPs by applying the 1.5-times formula.

    How was this production cost arrived at?

    • The CACP projects three kinds of production cost for every crop, both at the state and all-India average levels.
    • ‘A2’ covers all paid-out costs directly incurred by the farmer — in cash and kind — on seeds, fertilizers, pesticides, hired labor, leased-in land, fuel, irrigation, etc.
    • ‘A2+FL’ includes A2 plus an imputed value of unpaid family labor.
    • ‘C2’ is a more comprehensive cost that factors in rentals and interest forgone on owned land and fixed capital assets, on top of A2+FL.

    How much produce can the government procure at MSP?

    • The MSP value of the total production of the 23 crops worked out to around Rs 10.78 lakh crore in 2019-20.
    • Not all this produce, however, is marketed. Farmers retain part of it for self-consumption, the seed for the next season’s sowing, and also for feeding their animals.
    • The marketed surplus ratio for different crops is estimated to range differently for various crops.
    • It ranges from below 50% for ragi and 65-70% for bajra (pearl millet) and jawar (sorghum) to 75% for wheat, 80% for paddy, 85% for sugarcane, 90% for most pulses, and 95%-plus for cotton, soybean, etc.
    • Taking an average of 75% would yield a number of just over Rs 8 lakh crore.
    • This is the MSP value of production that is the marketable surplus — which farmers actually sell.

    Nature of MSP

    • There is currently no statutory backing for these prices, nor any law mandating their enforcement.

    Farmers demand legalization

    • Legal entitlement: There is a demand that MSP based on a C2+50% formula should be made a legal entitlement for all agricultural produce.
    • Private traders’ responsibility: Some say that most of the cost should be borne by private traders, noting that both middlemen and corporate giants are buying commodities at low rates from farmers.
    • Mandatory purchase at MSP: A left-affiliated farm union has suggested a law that simply stipulates that no one — neither the Government nor private players — will be allowed to buy at a rate lower than MSP.
    • Surplus payment by the govt.: Other unions have said that if private buyers fail to purchase their crops, the Government must be prepared to buy out the entire surplus at MSP rates.
    • Expansion of C2: Farm unions are demanding that C2 must also include capital assets and the rentals and interest forgone on owned land as recommended by the National Commission for Farmers.

    Government’s position

    • The PM has announced the formation of a committee to make MSP more transparent, as well as to change crop patterns — often determined by MSP and procurement.
    • The panel will have representatives from farm groups as well as from the State and Central Governments, along with agricultural scientists and economists.

    Back2Basics: Cotton Cultivation in India

    • Cotton, a semi-xerophyte, is grown in tropical & sub-tropical conditions.
    • A minimum temperature of 15C is required for better germination at field conditions.
    • The optimum temperature for vegetative growth is 21-27C & it can tolerate temperature to the extent of 43C but temperature below 21C is detrimental to the crop.
    • Cotton is grown on a variety of soils ranging from well-drained deep alluvial soils in the north to black clayey soils of varying depth in central region and in black and mixed black and red soils in south zone.
    • It is semi-tolerant to salinity and sensitive to water logging and thus prefers well-drained soils.

    Sowing season

    • The sowing season of cotton varies considerably from tract to tract and is generally early (April-May) in northern India.
    • Sowing is delayed as its proceeds down south (monsoon based in southern zone).

     

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  • ISRO Missions and Discoveries

    [pib] Vainu Bappu Observatory

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Vainu Bappu Observatory

    Mains level: Not Much

    vainu

    The several stellar discoveries of the 40-inch telescope at the Vainu Bappu Observatory in Kavalur, Tamil Nadu, were highlighted at the celebration of its 50 years of its operation.

    Vainu Bappu Observatory

    • The Vainu Bappu Observatory is an astronomical observatory owned and operated by the Indian Institute of Astrophysics.
    • It is located at Kavalur in the Javadi Hills, near Vaniyambadi in Tirupathur district in Tamil Nadu.
    • The 40-inch telescope was installed in 1972 and started producing important astronomical discoveries soon after.
    • More than a generation of astronomers were trained at this telescope as well.

    Significant feats achieved by VBO

    The telescope set up by Professor Vainu Bappu has played a significant role in astronomy with major discoveries like-

    1. Presence of rings around the planet Uranus,
    2. New satellite of Uranus,
    3. Presence of an atmosphere around Ganymede which is a satellite of Jupiter
    4. Discovery and study of many ‘Be stars’, Lithium depletion in giant stars, optical variability in Blazars, the dynamics of the famous supernova SN 1987A and so on.

     

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

    Dhokra Art of West Bengal

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Dhokra Art

    Mains level: Not Much

    dhokra

    This newscard is an excerpt from the articles published in TH.

    Do you know?

    The dancing girl from Mohenjo-Daro (c. 2300 – 1750 BCE) is not just the most famous piece of art from the Harappan Civilisation, it is also one of the finest examples of metal art from that period.

    dhokra

    But did you know that this world-famous figurine is also the oldest example of a unique metal casting tradition called Dhokra that survives to this day in parts of India?

    Dhokra Art

    • Named after a nomadic tribe called ‘Dhokra Damar’, the art of Dhokra was originally found in the region from Bankura to Dariapur in Bengal, and across the metal-rich regions of Odisha and Madhya Pradesh.
    • Today, it is practiced in the tribal belt across present-day Jharkhand, West Bengal, Odisha, Chhattisgarh and Telangana.
    • The Dhokra artistes first make a clay model out of wax, which is then replaced with molten metal, either brass or bronze, through a lost-wax metal cast.

    What is Dhokra?

    • Dhokra is a metal casted art that uses the ancient lost-wax casting technique.
    • This art is said to be the first of its kind to use a non-ferrous metal like copper and its alloys – brass (a mix of zinc and copper) or bronze (tin and copper) which do not contain iron.
    • It uses the process of annealing, where a metal is heated to very high temperatures and allowed to cool slowly.
    • The casting is done using two kinds of processes – the traditional, hollow-casting method and solid casting. Solid casting is predominant in Telangana, whereas hollow casting is used in Central and Eastern India.

    Symbolism of Dhokra

    • With its roots in ancient civilisations, Dhokra represents a primitive lifestyle and the beliefs of people, going back to the age of hunting.
    • This is why figures of elephants, owls, horses and tortoises are commonly seen in Dhokra art.
    • The elephant symbolises wisdom and masculinity; the horse motion; owl prosperity and death; and the tortoise femininity.
    • In Hindu mythology, these iconic symbols also have stories behind them.
    • The world is imagined to rest on four elephants, standing on the shell of a tortoise.
    • The tortoise, considered as an avatar of Lord Vishnu, carries the world on his back, holding up the earth and the sea.

     

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  • Modern Indian History-Events and Personalities

    3 more sites added to UNESCO’s tentative list of World Heritage Sites

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: World Heritage Cites

    Mains level: Not Much

    Gujarat’s Vadnagar town, the iconic Sun Temple at Modhera, and the rock cut sculptures of Unakoti in Tripura have been added to the tentative list of UNCESO World Heritage Sites.

    What is UNESCO tentative list?

    • The UNESCO tentative list is an inventory of those properties which each State Party intends to consider for nomination.
    • With these 3 sites, India now has 52 sites on UNESCO Tentative List.

    About the sites

    (1) Sun Temple, Modhera

    unesco

    • The Sun Temple at Modhera is located on the left bank of the river Pushpavati, a tributary of river Rupan in Becharaji taluka of Mehsana district.
    • The temple description states that it is built in Maru-gurjara architectural style, consists of the main temple shrine (garbhagriha), a hall (gadhamandapa), an outer hall or assembly hall (Sabhamandapa or rangamandapa) and a sacred pool (Kunda), which is now called Ramakunda.
    • This east-facing temple is built with bright yellow sandstone.
    • It is the earliest of such temples which set trends in architectural and decorative details, representing the Solanki style at its best.

    (2) Vadnagar

    unesco

    • Vadnagar is a historic town, which had continuous habitation for more than 2,700 years.
    • A multi-layered historic town, the history of Vadnagar stretches back to nearly 8th century BCE.
    • The town still retains a large number of historic buildings that are primarily religious and residential in nature.
    • It has evolved with time and has an early historic fortified settlement, hinterland port, centre for industries of shells and beads, late medieval town, religious centre/temple town, a significant junction on trade routes and mercantile town.
    • Rampart datable to second century BCE, fortification along the lake from third-fourth century CE, findings of Indo-Pacific glass beads and marine shells, palaeo-seismic evidence evidently point towards historical authenticity of the town.

    (3) Unakoti

    unesco

    • Located in the northeastern region of Tripura, Unakoti is known as an ancient holy place associated with Shaiva worship.
    • It is famously known as the ‘Angkor Wat of the North-East’
    • The structures of the rock-cut sculptures are gigantic and have distinct mongoloid features and display almost the same mystical charm as the spellbinding figures in the Angkor Wat temple of Cambodia.

    Back2Basics: UNESCO World Heritage Sites

    • A World Heritage Site is a landmark or area, selected by the UN Educational, Scientific and Cultural Organization (UNESCO) for having cultural, historical, scientific or other forms of significance, which is legally protected by international treaties.
    • The sites are judged to be important for the collective and preservative interests of humanity.
    • To be selected, a WHS must be an already-classified landmark, unique in some respect as a geographically and historically identifiable place having special cultural or physical significance (such as an ancient ruin or historical structure, building, city, complex, desert, forest, island, lake, monument, mountain, or wilderness area).
    • It may signify a remarkable accomplishment of humanity, and serve as evidence of our intellectual history on the planet.
    • The sites are intended for practical conservation for posterity, which otherwise would be subject to risk from human or animal trespassing, unmonitored/uncontrolled/unrestricted access, or threat from local administrative negligence.
    • The list is maintained by the international World Heritage Program administered by the UNESCO World Heritage Committee, composed of 21 “states parties” that are elected by their General Assembly.

    UNESCO World Heritage Committee

    • The World Heritage Committee selects the sites to be listed as UNESCO World Heritage Sites, including the World Heritage List and the List of World Heritage in Danger.
    • It monitors the state of conservation of the World Heritage properties, defines the use of the World Heritage Fund and allocates financial assistance upon requests from States Parties.
    • It is composed of 21 states parties that are elected by the General Assembly of States Parties for a four-year term.
    • India is NOT a member of this Committee.

     

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  • Global Geological And Climatic Events

    What is Winter Solstice?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Solstice

    Mains level: Not Much

    solstice

    Today, December 21, is Winter Solstice, the shortest day of the year in the Northern Hemisphere. In the Southern Hemisphere, conversely, it was Summer Solstice, the year’s longest day.

    What is Winter Solstice?

    • The winter solstice, also called the hibernal solstice, occurs when either of Earth’s poles reaches its maximum tilt away from the Sun.
    • This happens twice yearly, once in each hemisphere.

    What are Solstices?

    • Solstices occur because Earth’s axis of rotation is tilted about 23.4 degrees relative to Earth’s orbit around the sun.
    • This tilt drives our planet’s seasons, as the Northern and Southern Hemispheres get unequal amounts of sunlight over the course of a year.
    • From March to September, the Northern Hemisphere is tilted more toward the sun, driving its spring and summer.
    • From September to March, the Northern Hemisphere is tilted away, so it feels like autumn and winter.
    • The Southern Hemisphere’s seasons are reversed.
    • On two moments each year—what are called solstices—Earth’s axis is tilted most closely toward the sun.

    Impact on day-time

    • The hemisphere tilted most toward our home star sees its longest day, while the hemisphere tilted away from the sun sees its longest night.
    • During the Northern Hemisphere’s summer solstice—which always falls around June 21—the Southern Hemisphere gets its winter solstice.
    • Likewise, during the Northern Hemisphere’s winter solstice—which always falls around December 22—the Southern Hemisphere gets its summer solstice.

    Impact of the tilted axis

    • The Northern Hemisphere spends half the year tilted in the direction of the Sun, getting direct sunlight during long summer days.
    • During the other half of the year, it tilts away from the Sun, and the days are shorter.
    • Winter Solstice, December 21, is the day when the North Pole is most tilted away from the Sun.
    • The tilt is also responsible for the different seasons that we see on Earth.
    • The side facing the Sun experiences day, which changes to night as Earth continues to spin on its axis.

    Un-impacted regions

    • On the Equator, day and night are equal. The closer one moves towards the poles, the more extreme the variation.
    • During summer in either hemisphere, that pole is tilted towards the Sun and the polar region receives 24 hours of daylight for months.
    • Likewise, during winter, the region is in total darkness for months.

    Celebrations associated with the Winter Solstice

    • For centuries, this day has had a special place in several communities due to its astronomical significance and is celebrated in many ways across the world.
    • Jewish people call the Winter Solstice ‘Tekufat Tevet’, which marks the start of winter.
    • Ancient Egyptians celebrated the birth of Horus, the son of Isis (divine mother goddess) for 12 days during mid-winter.
    • In China, the day is celebrated by families coming together for a special meal.
    • In the Persian region, it is celebrated as Yalda or Shab-e-Yalda. The festival marks the last day of the Persian month of Azar and is seen as the victory of light over darkness.
    • Families celebrate Yalda late into the night with special foods such as ajeel nuts, pomegranates and watermelon, and recite works of the 14th-century Sufi poet Hafiz Shirazi.

    In Vedic tradition

    • In Vedic tradition, the northern movement of the Earth on the celestial sphere is implicitly acknowledged in the Surya Siddhanta.
    • It outlines the Uttarayana (the period between Makar Sankranti and Karka Sankranti). Hence, Winter Solstice is the first day of Uttarayana.

     

    Try this MCQ:

    Q. On 21st June, the Sun

    (a) Does not set below the horizon at the Arctic Circle

    (b) Does not set below the horizon at Antarctic Circle

    (c) Shines vertically overhead at noon on the Equator

    (d) Shines vertically overhead at the Tropic of Capricorn

     

    Post your answers here.

     

     

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