From UPSC perspective, the following things are important :
Prelims level: Autoimmune Conditions, Vitamin D
Why in the News?
Recent research conducted by scientists at McGill University has shed light on the critical role of vitamin D in maintaining thymus health and its implications for immune function.
AboutAutoimmune Conditions:
Autoimmune conditions refer to disorders where the immune system mistakenly attacks the body’s own healthy tissues, viewing them as foreign.
Vitamin D plays a role in regulating immune responses and promoting immune tolerance—the body’s ability to avoid attacking its own cells.
It influences T-cells (a type of immune cell) to recognize and tolerate the body’s own tissues rather than attacking them.
The thymus gland trains T-cells to avoid attacking healthy cells. A deficiency in Vitamin D may cause the thymus to age prematurely, reducing its ability to regulate T-cells properly.
Vitamin D affects certain genetic pathways related to immune function.
Variations in the vitamin D receptor (VDR) gene may also predispose some individuals to autoimmune diseases, and these individuals might be more sensitive to Vitamin D levels.
What is Vitamin D?
Vitamin D is a fat-soluble vitamin crucial for the body’s ability to absorb calcium, magnesium, and phosphate, which are essential for bone health.
It supports muscle movement, nerve function, and immune system responses. Due to its synthesis in the skin upon exposure to sunlight, it is often called the ‘sunshine vitamin’.
The body naturally produces Vitamin D when skin is exposed to ultraviolet B (UVB) rays from sunlight.
Sources of Vitamin D:
Fish: Salmon, mackerel, tuna, and sardines are rich in Vitamin D.
Cod liver oil: A concentrated source, providing 400–1,000 IU per teaspoon.
Mushrooms: Varieties like portobello contain Vitamin D if exposed to UV light.
Fortified Foods: Milk, yogurt, orange juice, and cereals often have added Vitamin D.
Egg yolks: Contain a small amount of Vitamin D.
Common forms include Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol), especially useful in autumn and winter when sunlight exposure is limited.
Significance of Vitamin D
Bone Health: Essential for calcium absorption, which strengthens bones and prevents osteoporosis.
Muscle and Nerve Function: Supports muscle contractions and nerve signaling between the brain and body.
Immune System: Enhances immune defenses, helping to fight off infections by viruses and bacteria.
Brain Health: May play a role in maintaining cognitive health, especially with aging.
Inflammation and Pain: Helps regulate the body’s response to inflammation and pain.
Blood Pressure: Linked to regulating blood pressure; deficiency is associated with hypertension.
Impacts of Vitamin D Deficiency
Increases the risk of rickets in children (softening of bones) and osteoporosis in adults.
Low levels of Vitamin D are linked to autoimmune conditions like rheumatoid arthritis, lupus, and multiple sclerosis.
Recent studies indicate that Vitamin D deficiency can accelerate thymus aging, leading to immune dysfunction and a higher risk of autoimmune diseases.
Deficiency has been associated with cancer, cardiovascular disease, diabetes, depression, and chronic pain.
Can include fatigue, muscle weakness, bone pain, and depression.
In severe cases, deficiency may cause impaired bone growth and fracture susceptibility.
PYQ:
[2011] 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?
(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.
The A&N Islands offer significant opportunities for fisheries development with approximately 6.0 lakh square km of Exclusive Economic Zone (EEZ).
This region has rich sea resources, particularly Tuna and Tuna-like species, with an estimated potential of 60,000 metric tons.
The islands’ location near Southeast Asia enables efficient sea and air trade, and the pristine waters support sustainable fishing.
About Tuna Species and its Significance
Tuna are large, fast-swimming fish belonging to the Thunnini tribe within the Scombridae family.
Known for their streamlined bodies and remarkable agility, tuna are found in tropical and temperate oceans worldwide.
There are over 15 species of tuna, with some of the most well-known being Bluefin, Yellowfin, Albacore, Bigeye, and Skipjack.
Tuna can grow quickly and live for several decades, with species like Bluefin reachingover 450 kg in weight.
It is one of the most popular and valuable fish in the global seafood market, highly sought after for its flavor, texture, and nutritional value.
Species like Bluefin tuna are particularly valuable, often fetching high prices in markets, especially in Japan for dishes like sushi and sashimi.
It is rich in protein, low in saturated fat, and packed with omega-3 fatty acids, which support heart health, brain function, and inflammation reduction.
It also provides essential vitamins and minerals like Vitamin D, B12, iron, and selenium.
PYQ:
[2013] The most important fishing grounds of the world are found in the regions where
(a) Warm and cold atmospheric currents meet
(b) Rivers drain out large amounts of freshwater into the sea
From UPSC perspective, the following things are important :
Prelims level: Jagannath Puri Temple
Why in the News?
Odisha’s law minister recently clarified that there was no secret chamber inside the treasury of the Jagannath Temple in Puri.
About Jagannath Puri Temple
The Jagannath Temple is an important Vaishnavite temple dedicated to Jagannath, a form of Sri Krishna in Puri in Odisha.
The present temple was rebuilt from the 10th century onwards, on the site of an earlier temple, and begun by Anantavarman Chodaganga Deva, the first king of the Eastern Ganga dynasty.
The Puri temple is famous for its annual Ratha Yatra, or chariot festival, in which the three principal deities are pulled on huge and elaborately decorated temple cars.
It’s Architecture:
With its sculptural richness and fluidity of the Oriya style of temple architecture, it is one of the most magnificent monuments of India.
The huge temple complex covers an area of over 400,000 square feet and is surrounded by a high fortified wall.
This 20 feet high wall is known as Meghanada Pacheri.
Another wall known as kurma bedha surrounds the main temple.
The temple has four distinct sectional structures, namely:
Deula, Vimana or Garba griha (Sanctum sanctorum) where the triad deities are lodged on the ratnavedi (Throne of Pearls). In Rekha Deula style;
Mukhashala (Frontal porch);
Nata mandir/Natamandapa, which is also known as the Jagamohan (Audience Hall/Dancing Hall), and
Bhoga Mandapa (Offerings Hall)
PYQ:
[2012] The Nagara, the Dravida and the Vesara are the:
(a) Three main racial groups of the Indian subcontinent
(b) Three main linguistic divisions into which the languages of India can be classified
(c) Three main styles of Indian temple architecture
(d) Three main musical Gharanas prevalent in India
From UPSC perspective, the following things are important :
Prelims level: First Asian Buddhist Summit
Why in the News?
The Government of India, in collaboration with the International Buddhist Confederation (IBC), held the first Asian Buddhist Summit (ABS) in New Delhi.
About the Asian Buddhist Summit (ABS)
ABS is a high-level conference organized to bring together Buddhist leaders, scholars, and practitioners from across Asia.
The theme of the first summit was ‘Role of Buddha Dhamma in Strengthening Asia’.
It aligns with India’s Act East Policy, aiming to deepen cultural and spiritual ties across Asian nations.
Key topics discussed at the summit include:
The role of Buddhist art, architecture, and heritage.
The dissemination of Buddha Dhamma and its cultural influence across Asia.
The significance of holy Buddhist relics and their societal impact.
The relevance of Buddhist philosophy and literature in the 21st century.
Exploring the relationship between Buddhism and scientific research for health and well-being.
About Buddhism:
Details
Origin of Buddhism
• Originated in India over 2,600 years ago.
• Founded by Siddhartha Gautama (the Buddha) around 563 BCE.
• Born into the royal family of the Sakya clan in Lumbini, near the Indo-Nepal border.
• At age 29, Gautama renounced a life of luxury and embraced asceticism.
• Attained Bodhi (enlightenment) after 49 days of meditation under a pipal tree in Bodhgaya, Bihar.
• Delivered his first sermon in Sarnath, known as Dharma-Chakra-Pravartana.
• Died at 80 in Kushinagara (Mahaparinirvana) in 483 BCE.
Tenets of Buddhism
• Advocated the Madhyam Marg (Middle Path) between indulgence and asceticism.
• Emphasized individual responsibility for happiness.
• Four Noble Truths (ariya-sachchani):
1. Dukkha: Suffering is inherent.
2. Samudya: Every suffering has a cause.
3. Nirodha: Suffering could be extinguished.
4. Atthanga Magga: Achieved through the Eightfold Path.
• Eightfold Path (astangika marg): Right view, intention, speech, action, livelihood, mindfulness, effort, concentration.
• Ultimate goal: Attaining Nirvana (Nibbana).
• Five Precepts (Panchasil): Prohibitions against violence, stealing, sexual misconduct, lying, and intoxicants.
Major Buddhist Texts
• Initially oral teachings, memorized by the Sangha.
• Written down around 25 BCE in Pali.
• Three Pitakas:
1. Vinaya Pitaka: Monastic rules.
2. Sutta Pitaka: Main teachings, divided into five Nikayas (Digha, Majjhima, Samyutta, Anguttara, Khuddaka).
3. Abhidamma Pitaka: Philosophical analysis of teachings.
• Other important texts: Divyavadana, Dipavamsa, Mahavamsa, Milind Panha.
Role of the Buddhist Councils
• Important turning points in early Buddhism, leading to sectarian clashes and the Great Schism.
• Four Major Councils:
1. First Council (483 BCE): Presided by Mahakasyapa, aimed to preserve teachings.
2. Second Council (383 BCE): Addressed monastic discipline.
3. Third Council (250 BCE): Under Ashoka, focusing on spreading Buddhism.
4. Fourth Council (72 CE): Led to division into Mahayana and Hinayana.
Different Schools of Buddhism
• Mahayana: “Great Vehicle,” emphasizes Bodhisattva ideal and idol worship; spread to Central and East Asia.
• Hinayana: “Lesser Vehicle,” focuses on individual salvation and original teachings; Theravada is a major branch.
• Theravada: Closest to original teachings; dominant in Cambodia, Laos, Myanmar, Sri Lanka, and Thailand.
• Vajrayana: “Vehicle of the Thunderbolt,” complex rituals; developed around 900 CE.
• Zen: Focuses on meditation, developed in China and Japan.
Spread of Buddhism in Ancient India
• Monastic organization through Sangha for spreading teachings.
• Rapid growth during Buddha’s lifetime.
• Ashoka’s influence post-Kalinga conquest; adopted Dhamma conquest, sending missions to various regions, including Gandhara, Kashmir, Greece, Sri Lanka, Burma (Myanmar), Egypt, and Thailand.
PYQ:
[2020] With reference to the religious history of India, consider the following statements:
1. Sthaviravadins belong to Mahayana Buddhism.
2. Lokottaravadin sect was an offshoot of Mahasanghika sect of Buddhism.
3. The deification of Buddha by Mahasanghikas fostered the Mahayana Buddhism.
Which of the statements given above is/are correct?
From UPSC perspective, the following things are important :
Prelims level: Sun’s Rotation
Why in the News?
Indian astronomers at the Kodaikanal Solar Observatory (KSO) have achieved a groundbreaking feat by mapping, for the first time, the variation in the Sun’s rotation speed from its equator to its poles.
Sun’s Rotation: Key Facts
Unlike a solid body, the Sun exhibits differential rotation, meaning different parts of the Sun rotate at different speeds.
The rotation speed varies depending on latitude, with faster rotation near the equator and slower rotation toward the poles.
This variation is primarily due to the Sun’s composition of gaseous plasma rather than solid material.
Rotation Period Variation by Latitude:
Equatorial Regions: The rotation period at the equator is the fastest, around 24.47 days (sidereal rotation).
Sunspot Zones (about 16 degrees latitude): Rotation slows slightly, with a period of about 27.3 days.
Higher Latitudes (up to 75 degrees): Rotation slows significantly; for example, at 75 degrees latitude, the rotation period is about 33.4 days.
Poles: The slowest rotation occurs at the poles, with a period around 31.1 days.
Sidereal vs. Synodic Rotation Periods:
Sidereal Rotation Period: The time taken for the Sun to complete one full rotation relative to distant stars. It varies by latitude, from 24.47 days at the equator to around 33.4 days at higher latitudes.
Synodic Rotation Period: This is the time for a fixed feature on the Sun to appear in the same position when observed from Earth. It is longer than the sidereal period due to Earth’s own movement around the Sun, averaging around 26.24 days.
Why Differential Rotation Occur?
Gaseous Plasma Composition: The Sun is composed of plasma—a hot, ionized state of matter—which allows its different regions to rotate at different speeds.
Convective Zone Dynamics: The outer convective layer of the Sun contributes to differential rotation. Plasma circulates, rising and sinking, which influences the rotational speed at different latitudes.
Scientific Implications
Solar Dynamo Theory: The differential rotation of the Sun is central to theories about the solar dynamo—the process that generates the Sun’s magnetic field.
Mystery of Differential Rotation: Despite extensive research, the exact mechanism behind the Sun’s differential rotation remains an active area of investigation in solar physics.
From UPSC perspective, the following things are important :
Prelims level: Black Hole Triple and its formation
Why in the News?
Scientists have discovered a “black hole triple” in space, marking the first time such a system has been identified.
Black Hole Triple: What does it mean?
Many black holes are found in binary systems with another star or black hole.
This triple system includes two stars orbiting a black hole:
The nearer star orbits the black hole every 6.5 days.
The distant star orbits approximately every 70,000 years.
The system, located in the constellation Cygnus, features V404 Cygni, one of the oldest black holes known, which is nine times larger than the Sun.
It is 8,000 light years away from Earth.
What is a Black Hole?
A black hole is a space region with such strong gravity that no light or matter can escape.
Most black holes form from supernova explosions—the death of massive stars.
This triple system suggests an alternative, less violent formation process.
How was it discovered?
Researchers from Caltech and MIT discovered the system while reviewing astronomical data from telescopes.
They described the stars as being gravitationally bound, indicating they form a triple system.
It is believed that V404 Cygni did not form through a supernova explosion, which typically ejects outer stars.
Instead, it likely formed through direct collapse: the star collapsed inward without exploding.
Known as a “failed supernova”, this process causes an implosion without expelling matter, leading to a gentler black hole formation.
Future of the Triple System
The triple system may not remain as such, as V404 Cygni is consuming the nearby star.
This discovery suggests that some existing binary systems may have originally been triple systems, where the black hole later consumed one of its members.
PYQ:
[2019] Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation?
(a) ‘Higgs boson particles’ were detected.
(b) ‘Gravitational waves’ were detected.
(c) Possibility of inter-galactic space travel through ‘wormhole’ was confirmed.
(d) It enabled the scientists to understand ‘singularity’
From UPSC perspective, the following things are important :
Prelims level: Kalka-Shimla Heritage Railway
Why in the News?
Himachal Pradesh CM has requested the Centre to consider running the Kalka-Shimla narrow-gauge railway—a UNESCO World Heritage Site—on green hydrogen to promote clean energy.
The CM emphasized that this initiative aligns with Himachal Pradesh’s goal of becoming a ‘green energy state’ by March 31, 2026.
About the Kalka-Shimla Railway
The Kalka-Shimla Railway is a narrow-gauge railway with a width of 2 ft 6 in (762 mm).
It was constructed in 1898 to link Shimla with the broader Indian rail system under the guidance of chief engineer H. S. Harington.
The total length of the railway is approximately 96.6 km.
This engineering marvel features 107 tunnels, of which 102 are still in use, along with 864 bridges along its route.
The railway has a ruling gradient of 1 in 33 (about 3%), making it quite a steep climb in places, and it includes 919 curves, with the sharpest curve being at 48 degrees.
The elevation of the railway starts at 656 meters (2,152 feet) in Kalka and rises to 2,076 meters (6,811 feet) in Shimla, resulting in a height difference of 1,420 meters (4,660 feet).
Diesel locomotives began operation on the railway in 1955, followed by diesel-hydraulic models introduced in 1970.
On 8 July 2008, it was designated as a UNESCOWorld Heritage Site as part of the Mountain Railways of India.
Note:
Three of the lines, the Darjeeling Himalayan Railway, the Nilgiri Mountain Railway, and the Kalka–Shimla Railway, are collectively designated as a UNESCO World Heritage Site under the name “Mountain Railways of India”.
Two more, the Matheran Hill Railway and the Kangra Valley Railway, are on the tentative list of UNESCO World Heritage Sites.
The Nilgiri Mountain Railway is also the only rack and pinion railway in India.
PYQ:
[2015] With reference to bio-toilets used by the Indian Railways, consider the following statements:
1. The decomposition of human waste in the bio toilets is initiated by a fungal inoculum.
2. Ammonia and water vapour are the only end products in this decomposition which are released into the atmosphere.
Which of the statements given above is/are correct?
From UPSC perspective, the following things are important :
Prelims level: Thadou Tribe
Why in the News?
The Thadou tribe, one of the oldest and largest non-Naga tribes in Manipur, has expressed support to implement the National Register of Citizens (NRC)in the state.
About the Thadou Community
Details
Overview
One of the oldest indigenous tribes in Manipur, recognized as a distinct community.
One of 29 officially recognized indigenous tribes in Manipur with rich cultural practices and folklore.
Historical Background
Recognized as the largest tribe in Manipur since the First Census of India (1881), with a distinct historical narrative from Kukis.
ST Recognition
Acknowledged as an independent Scheduled Tribe under the 1956 Presidential Order.
Population
As per the 2011 Census, the Thadou population stands at 2,15,913;
Identity
Asserts a distinct identity from the Kuki community, emphasizing unique language, culture, and history.
Language
Belongs to the Tibeto-Burman family, with a distinct dialect from other nearby tribes.
Geographic Distribution
Primarily located in Manipur; also present in Nagaland, Assam and Mizoram, inhabiting hilly regions.
Socioeconomic Status
Engaged in agriculture (particularly jhum cultivation) and knowledgeable about medicinal plants; faces challenges in infrastructure and education.
Religious Practices
Traditionally practiced animism; many have converted to Christianity, blending traditional and Christian customs.
Position Amid Ethnic Conflict
Affected by the ethnic conflict between Meitei and Kuki-Zo communities since May 3, 2023; asserts their distinct identity.
From UPSC perspective, the following things are important :
Prelims level: Gompertz Model
Why in the News?
Indian researchers have developed a predictive model based on the Gompertz Model to estimate a newborn’s birth weight using routine pregnancy scans.
What isthe Gompertz Model?
It is a mathematical model developed by English mathematician Benjamin Gompertz in the early 19th century.
It was originally designed to modelpopulation growth in a constrained environment, such as a specific geographic region.
The model uses an S-shaped (sigmoid) curve to represent growth patterns that start slowly, accelerate, and then slow again as they approach a plateau.
Applications:
Biology: The Gompertz Model is used to study tumor growth and cell population dynamics, reflecting constrained growth in biological systems.
Epidemiology: Applied in predicting the spread of infectious diseases like COVID-19, capturing how transmission rates slow with interventions.
Ecology: Useful for modelling species population growth in habitats with limited resources, aiding conservation and ecosystem management.
Healthcare: Recently adapted to predict foetal birth weight, helping identify potential risks associated with low or high birth weight.
Aging Research: Employed to analyze mortality rates and lifespan patterns, contributing to studies on aging and longevity.
Recent Research and Significance
Recent research has applied the Gompertz Model in predicting foetal birth weight using routine scans, as shown by researchers from IISER Pune and IMSc Chennai, offering a non-invasive alternative for maternal health.
The model is used in tumor growth studies, allowing researchers to understand and predict cancer progression.
Its predictive accuracy under constrained conditions makes it useful for biological systems, including population growth and cell dynamics.
In healthcare, it supports early detection and intervention for conditions impacted by growth patterns, such as low or high birth weight risks.
From UPSC perspective, the following things are important :
Prelims level: Glacial Lakes
Why in the News?
Since 1977, the South Lhonak Lake, a glacial lake in Sikkim has expanded significantly, growing from 17 hectares to 167 hectares by 2023.
Formation of Glacial Lakes:
When a glacier melts and retreats, the hollow left behind often fills with water, creating a glacial lake.
The rocky moraine at the glacier’s end can act as a natural dam, holding the water to form the lake.
Glacial lakes act as hydrological buffers, regulating water flow from melting ice, which can sometimes pose challenges to downstream communities.
Glacial lakes often have a vivid blue color, similar to swimming pools, due to the scattering of light by fine rock particles (rock flour) in the water.
There are several types of glacial lakes, each formed by specific processes and glacier dynamics:
Moraine-Dammed Lakes: Formed when moraine debris piles up at the end of a glacier and traps meltwater behind it. These are common and pose risks of outburst flooding.
Kettle Lakes: This was created when a chunk of glacier ice is buried in the moraine and eventually melts, leaving a depression filled with water.
Cirque Lakes: Formed in circular basins (cirques) carved by glaciers at high elevations. These lakes are often small and located at the glacier’s original head.
Pro-glacial Lakes: Situated in front of the glacier, between the ice and the moraine dam. These lakes are sometimes formed when the glacier’s snout melts and deposits water in the valley.
Tarn Lakes: Formed in depressions left behind in the cirques or basins after the glacier has completely melted.
Major Glacial Lakes in India
India’s Himalayan region is home to numerous glacial lakes, each with unique characteristics:
Gurudongmar Lake (Sikkim): One of the highest lakes in the world at 5,430 meters above sea level, fed by glacial melt and known for its religious significance.
Chandra Taal (Himachal Pradesh): A stunning crescent-shaped lake in the Lahaul-Spiti region at 4,300 meters. It is surrounded by snow-capped mountains and fed by glacier melt.
Samiti Lake (Sikkim): Located along the trek to Kanchenjunga and known for its clear blue waters and reflective quality.
Satopanth Tal (Uttarakhand): Found in the Garhwal Himalayas, this lake lies close to Satopanth Glacier and is considered sacred by locals.
South Lhonak Lake (Sikkim): A growing lake fed by three glaciers, expanding rapidly due to climate change and posing risks of glacial lake outburst floods.
PYQ:
[2019] Consider the following pairs:
Glacier: River
Bandarpunch: Yamuna
Bara Shigri: Chenab
Milam: Mandakini
Siachen: Nubra
Zemu: Manas
Which of the pairs given above are correctly matched?
(a) 1, 2 and 4 only
(b) 1, 3 and 4 only
(c) 2 and 5 only
(d) 3 and 5 only
From UPSC perspective, the following things are important :
Prelims level: Obstructive Sleep Apnea (OSA)
Why in the News?
A recent study from Michigan Medicine found that Obstructive Sleep Apnea (OSA), a common sleep disorder, increases the risk of dementia (loss of cognitive functioning) in adults, especially in women.
What is Obstructive Sleep Apnea (OSA)?
OSA is a sleep disorder where breathing repeatedly stops and starts during sleep due to blocked airways.
It is marked by episodes of disrupted or restricted breathing, leading to brief awakenings throughout the night.
Symptoms include loud snoring, gasping for air, morning headaches, and daytime drowsiness.
Risk Factors: Common in individuals who are overweight, have large tonsils or suffer from nasal congestion.
In India, approximately 10.4 lakh people are reported to suffer from OSA, as per government data.
Untreated OSA is associated with various health risks, including heart disease, diabetes, and cognitive decline.
Recent Findings on OSA and Dementia Risk
A study from Michigan Medicine found a link between OSA and increased dementia risk, especially in older adults over 50.
Women with known or suspected OSA were found to have a higher likelihood of developing dementia compared to men, with dementia diagnoses increasing as women age.
Another study by NIMHANS focused on the link between stroke and OSA.
105 stroke patients over the age of 50 were studied using polysomnography (PSG), which tracks brain waves and sleep breathing patterns.
Results showed that 88%of stroke patientshadsleep apnea soon after their stroke, with 38% having severe OSA.
From UPSC perspective, the following things are important :
Prelims level: Indian Council of Social Science Research (ICSSR)
Why in the news?
Employees of the Indian Council of Social Science Research (ICSSR) institutions have expressed concerns over the delay in revising their pay scales.
Aboutthe Indian Council of Social Science Research (ICSSR):
Details
Establishment
It was established as an Autonomous organization, in 1969 on the recommendation of Prof. V. K. R. V. Rao Committee (National Income Committee).
Nodal Ministry
Operates under the Ministry of Education.
Function
Promote, fund, and support social science research in India.
Objectives
• Encourage social science research
• Fund and coordinate research in various branches
• Collaborate with international research organizations
• Provide policy recommendations based on research
Organizational Structure
It is governed by a Council of eminent scholars and policymakers, supported by 24 research institutes and 6 regional centers.
Research Institutes
Funds institutes such as:
• Centre for Development Studies (CDS), Thiruvananthapuram
• Institute for Social and Economic Change (ISEC), Bengaluru
• Centre for Studies in Social Sciences (CSSS), Kolkata
• Gokhale Institute of Politics and Economics (GIPE), Pune
Key Programs and Initiatives
• ICSSR Data Service: National repository for social science data
• NASSDOC: Documentation and library services
• Workshops and conferences to enhance research capabilities
International Collaboration
Collaborates with organizations like UNESCO and the Indian Council of World Affairs for joint projects and scholar exchanges.
PYQ:
[2013] Which of the following bodies is/are not mentioned in the Indian Constitution?
1. National Development Council
2. Planning Commission
3. Zonal Councils
Select the correct answer using the codes given below:
From UPSC perspective, the following things are important :
Prelims level: Exercise GARUD SHAKTI 24
Why in the News?
The Indian Army contingent has departed for Cijantung, Jakarta, Indonesia to take part in the 9th edition of India-Indonesia Joint Special Forces Exercise GARUD SHAKTI 24.
Note:
Exercise Garuda is a bilateral air forceexercise between the Indian Air Force and the French Air and Space Force.
Exercise Shakti is a biennial training event conducted alternatively in India and France.
AboutExercise GARUD SHAKTI 24
Details
What is it?
A bilateral joint special forces exercise between India and Indonesia aimed at enhancing military cooperation.
Held alternatively in India and Indonesia.
History
Initiated in 2012 as part of defense cooperation between India and Indonesia.
Objectives
• Enhance mutual understanding and cooperation between special forces
• Share best practices and experiences in counter-terrorism
• Conduct joint operations and drills to improve interoperability
Activities
• Joint planning and execution of special operations
• Orientation on advanced special forces skills
• Sharing information on weapons, tactics, and techniques
• Operations practice in diverse terrains
• Cultural exchanges between troops
Significance
• Strengthens bilateral relations
• Fosters trust between India and Indonesia
• Contributes to regional security and addresses terrorism challenges
• Enhances operational capabilities of both armies
Recent Edition
Ninth Edition (2024): Scheduled from November 1 to 12, focusing on enhancing understanding, cooperation, and interoperability.
PYQ:
[2024] Which of the following statements about the Exercise Mitra Shakti-2023 is/ are correct?
This was a joint military exercise between India and Bangladesh.
It commenced in Aundh (Pune).
Joint response during counter-terrorism operations was a goal of this operation.
From UPSC perspective, the following things are important :
Prelims level: Exercise VAJRA PRAHAR
Why in the News?
The Indian Army contingent departed today for the 15th edition of VAJRA PRAHAR, a joint Special Forces exercise with the US Army.
AboutExercise VAJRA PRAHAR:
Details
What is it?
A joint Special Forces exercise between India and the US aimed at enhancing military cooperation.
Inception
Started in 2010 as part of bilateral defense cooperation between India and the US.
No exercises held between 2012 and 2015 and in 2020.
Frequency
Conducted annually, alternately in India and the United States.
15th Edition Dates
Scheduled from 2nd to 22nd November 2024 at the Orchard Combat Training Centre, Idaho, USA.
Participants
45 personnel from each country; Indian Army’s Special Forces and US Army’s Green Berets.
Objectives
• Enhance military cooperation
• Promote interoperability and tactical exchange
• Improve combined capabilities in joint operations
Key Focus Areas
• High physical fitness standards
• Joint planning and tactical drills
Significance
• Joint Team Mission Planning
• Reconnaissance Missions
• Use of Unmanned Aerial Systems (UAS)
• Execution of Special Operations
• Roles of Joint Terminal Attack Controllers
• Psychological Warfare
From UPSC perspective, the following things are important :
Prelims level: Chronic Wasting Disease (CWD) and its spread
Why in the News?
A case of Chronic Wasting Disease (CWD) was confirmed in the US.
About Chronic Wasting Disease (CWD)
CWD is a fatal, transmissible disease that affects the brain and central nervous system of deer, elk, and moose.
First identified in 1967, CWD is a prion disease where normal proteins misfold, leading to symptoms that eventually cause death.
Transmission occurs through animal-to-animal contact or contamination of feed or water by infected saliva or bodily waste.
Environmental contamination can occur through soil exposure from infected carcasses or bodily fluids.
High-risk areas include places where deer and elk gather closely, like feeding or watering sites.
Species affected: CWD does not naturally infect cows, other livestock, or pets.
Although no strong evidence exists that it can spread to humans, officials advise against eating meat from infected animals.
Symptoms of CWD:
Symptoms: Drastic weight loss, lack of coordination, drooling, listlessness, and excessive thirst. Infected animals may also show drooping ears and lose their fear of humans.
Prevention: To prevent the spread of CWD, avoid handling or eating sick animals, use synthetic lures, dispose of carcass waste in landfills, and report any sick or unusual deer to local wildlife authorities.
PYQ:
[2012] Vultures which used to be very common in Indian countryside some years ago are rarely seen nowadays. This is attributed to:
(a) The destruction of their nesting sites by new invasive species
(b) A drug used by cattle owners for treating their diseased cattle
(c) Scarcity of food available to them
(d) A widespread, persistent and fatal disease among them
From UPSC perspective, the following things are important :
Prelims level: DANA
Why in the News?
The extreme conditions in eastern Spain which saw Valencia get a year’s worth of rainin just 8 hours can be blamed on an event locally known as Depresion Aislada en Niveles Altos (DANA).
What is DANA?
Depresion Aislada en Niveles Altos (DANA), is commonly referred to as the “cold drop” in English.
It is a meteorological phenomenon in the western Mediterranean region that brings intense rainfall and flooding.
The term “DANA” was coined by Spanish meteorologists to specifically describe this weather phenomenon.
Features and Location:
DANA occurs when cold airfrom the Polar Regions separates from the polar jet stream and descends over the warmer Mediterranean Sea.
The contrast between cold air aloft and warm, moist air near the surface causes atmospheric instability, leading to the rapid formation of cumulonimbus clouds and intense thunderstorms.
It primarily affects Spain and Portugal but can also impact Italy, France, and other areas around the Mediterranean Sea.
This occurs in autumn and spring, as temperature variations are more pronounced during these seasons.
PYQ:
[2014] The seasonal reversal of winds is the typical characteristic of:
From UPSC perspective, the following things are important :
Prelims level: Konark Wheels, Sun Temple, Kalinga Architecture
PC: konark.in
Why in the News?
Four replicas of the Konark wheels, made of sandstone, have been installed at Rashtrapati Bhavan Cultural Centre and Amrit Udyan.
About Konark Wheels
Details
Design
The temple is designed in the shape of a huge chariot drawn by 7 horses and features 24 wheels.
Dimensions of Wheels
Each wheel has a diameter of 9 feet 9 inches with 8 wider spokes and 8 thinner spokes.
Symbolism of Wheels
The wheels represent various time-related aspects:
• 7 horses symbolize the days of the week.
• 12 pairs of wheels signify 12 months.
• 24 wheels represent 24 hours in a day.
• 8 spokes symbolize prahars (three-hour periods).
Architectural Features
• The wheels are intricately carved, showcasing designs of foliage, animals, and figures of women in various poses.
• Rims of the wheels have decorative carvings.
Sun Dial Functionality
Two of the wheels function as a sundial, accurately indicating time from sunrise to sunset using the shadow cast by the axel.
Modern Representation
Featured in Indian currency, specifically in the old Rs. 20 and new Rs. 10 notes, representing Odisha’s rich cultural heritage.
Rs. 10 note released by the RBI on January 5, 2018, features the Konark Wheel on its reverse side.
Its significance
The Konark Wheel, serving as an ancient sundial, symbolizes the advanced understanding of timekeeping and astronomy in 13th-century India.
Its intricate carvings reflect exceptional craftsmanship and cultural significance, embodying the cycle of life and the worship of Surya, the Sun God.
Its depiction on Indian currency highlights its enduring legacy and significance in promoting national identity and tourism in Odisha.
Back2Basics: Konark Sun Temple
Approximately 64 km from Bhubaneswar.
Built in the 13th century (around 1250 CE) during the reign of King Narasimhadeva I of the Eastern Ganga Dynasty.
Dedicated to Surya, the Sun God.
Exemplifies Kalinga architecture, known for its intricate stone carvings and elaborate sculptures.
Constructed from Khondalite stone, which is durable and intricately carved.
Designed as a chariot with 7 horses and 24 wheels.
Structure originally included a sanctum (deul) and a jagamohan(assembly hall) that have largely collapsed but were once adorned with exquisite carvings.
PYQ:
[2017] Which of the following is/are famous for Sun temples?
1. Arasavalli
2. Amarakantak
3. Omkareshwar
Select the correct answer using the codes given below:
From UPSC perspective, the following things are important :
Prelims level: Maithili; Eighth Schedule
Why in the News?
While five languages were granted classical status earlier this month, Maithili was not considered as the Bihar governmenthad not officially forwarded the proposal, despite ongoing demands for its inclusion.
About Maithili Language
Maithili belongs to the eastern sub-group of the Indo-Aryan branch of languages.
It is believed to have evolved from Magadhan Prakrit.
The poet Vidyapati (14th century) popularized Maithili, establishing its importance in literature and folk culture.
It was added to the Eighth Schedule of the Indian Constitution in 2003, making it one of the 22 officially recognized languages of India.
It is an optional subject in the UPSC exams, providing an opportunity for candidates to take it as a paper.
It was granted second official language status in Jharkhand in 2018.
It is spoken primarily in Bihar and Jharkhand in India, with a significant presence in Nepal.
According to the 2011 Census, there are around 12 million Maithili speakers in India.
It is the second most spoken language in Nepal, especially in the Terai region.
Mithilakshar, also known as Tirhuta, is the original script used for writing Maithili.
It belongs to the same family as Bangla, Assamese, Odia, Tibetan, and Nepali scripts.
The script’s oldest records date back to 950 AD, found in Sahodara stone inscriptions.
AboutEighth Schedule:
Details
Purpose
Lists the official languages of India as recognized by the Constitution.
Relevant Articles
Part XVII (Articles 343 to 351) of the Constitution outlines provisions for official languages.
Key Constitutional Provisions
• Article 344(1): Mandates the formation of a Commission by the President to recommend steps to promote Hindi after five years of the Constitution’s commencement.
• Article 351: Promotes the development of Hindi as a medium to represent India’s composite culture.
Languages in the Eighth Schedule
Currently includes 22 languages: Initially Included (14 languages): Assamese, Bengali, Gujarati, Hindi, Kannada, Kashmiri, Konkani, Malayalam, Manipuri, Marathi, Nepali, Oriya, Punjabi, Sanskrit, Sindhi, Tamil, Telugu, and Urdu. Later Additions: Sindhi (21st Amendment, 1967), Konkani, Manipuri, Nepali (71st Amendment, 1992), Bodo, Dogri, Maithili, Santhali (92nd Amendment, 2003).
Official Language Status
Hindi (in Devanagari script) is the official language of India, with English as an additional official language for administrative purposes.
PYQ:
[2014] Consider the following languages:
Gujarati
Kannada
Telugu
Which of the above has/have been declared as ‘Classical Language/Languages’ by the Government?
