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  • 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?

    (a) 1 and 2 only

    (b) 2 and 3 only

    (c) 3 only

    (d) 1, 2 and 3

  • Does the Sun rotate?

    sun

    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.

    PYQ:

    [2013] Consider the following phenomena

    1. Size of the sun at dusk

    2. Colure of the sun at dawn

    3. Moon being visible at dawn

    4. Twinkle of stars in the sky

    5. Polestar being visible in the sky

    Which of the above are optical illusions?

    (a) 1, 2 and 3

    (b) 3, 4 and 5

    (c) 1, 2 and 4

    (d) 2, 3 and 5

  • First ‘Black Hole Triple’ System Discovered

    Scientists have discovered a “black hole triple” in space, marking the first time such a system has been identified.

    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’

  • Kalka-Shimla Heritage Railway Track

    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 UNESCO World 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?

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

  • Manipur’s non-Naga Thadou community lends support to NRC

    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.

     

    PYQ:

    [2013] Consider the following pairs :

    Tribe: State

    1. Limboo Limbu : Sikkim

    2. Karbi : Himachal

    3. Dongaria Kondh : Odisha

    4. Bonda : Tamil Nadu

    Which of the above pairs are correctly matched?

    (a) 1 and 3 only

    (b) 2 and 4 only

    (c) 1, 3 and 4 only

    (d) 1, 2, 3 and 4

  • The 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 is the Gompertz Model?

    • It is a mathematical model developed by English mathematician Benjamin Gompertz in the early 19th century.
      • It was originally designed to model population 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.

  • Glacial Lakes rise as glaciers retreat

    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

    1. Bandarpunch: Yamuna
    2. Bara Shigri: Chenab
    3. Milam: Mandakini
    4. Siachen: Nubra
    5. 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

  • Sleep Apnea contributes to Dementia in older adults

    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 patients had sleep apnea soon after their stroke, with 38% having severe OSA.

  • 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.

    About the 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:

    (a) 1 and 2 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • [pib] 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 force exercise 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.

    About Exercise 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?

    1. This was a joint military exercise between India and Bangladesh.
    2. It commenced in Aundh (Pune).
    3. Joint response during counter-terrorism operations was a goal of this operation.
    4. Indian Air Force was a part of this exercise.

    Select the answer using the code given below:

    (a) 1, 2 and 3

    (b) 1 and 4

    (c) 1 and 4

    (d) 2, 3 and 4