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  • Wildlife Conservation Efforts

    What is Wallace Line?

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

    Wallace Line

    Why in the news?

    The Wallace Line, a distinct transition zone between Asia and Australia, has long fascinated researchers due to its unique characteristics.

    What is Wallace Line?

    Details
    What is it?
    • A bio-geographical boundary separating the eco-zones of Asia and Australia.
    • It was identified by British explorer Alfred Russel Wallace in 1863 during his explorations.
    • It is an imaginary line that intersects the Lombok Strait between the Indonesian islands of Bali and Lombok to the south, and extends north through the Makassar Strait between Kalimantan (Borneo) and Sulawesi.
    Unique Features
    • Divides species with distinct evolutionary histories.
    • Asiatic species (tigers, elephants) are found to the west; Australian fauna (kangaroos, marsupials) dominate the east.
    • Despite their geographical proximity, these species evolved separately.
    Impact on Wildlife
    • Birds and mammals are particularly influenced, with few species crossing the line.
    • Flora is less affected, though species like Eucalyptus stay on the Australian side.
    Impact on Marine Species
    • While the Wallace Line is a barrier for terrestrial species, it doesn’t stop marine life. 
    • The area between the Wallace Line and the Sahul Shelf (near Australia) is known as the Coral Triangle, the most biodiverse marine environment on Earth.
    Formation
    • Result of Australia’s drift from Antarctica and subsequent collision with Asia around 35 million years ago.
    • Climate shifts led to cooler, drier Australia and tropical Asia.
    • This collision created a deep-water channel that still acts as a natural barrier for species migration.
    Pleistocene Epoch Influence
    • During the Pleistocene epoch, lower sea levels exposed land bridges.
    • Deep waters between Asia and Australia prevented species migration, maintaining the boundary.

     

    Note: 

    Weber Line more accurately defines the balance point where the influence of Asian and Australian species is nearly equal, whereas the Wallace Line marks a sharper divide.

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  • Wildlife Conservation Efforts

    Elongated Tortoise (Indotestudo elongata) spotted in Aravallis

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

    Why in the News?

    The elongated tortoise (Indotestudo elongata), a critically endangered species, was recently spotted in Haryana’s Damdama area during a research survey in the Aravalli hills.

    About Elongated Tortoise:

    Details
    Physical Features
    • Medium-sized body with a yellowish-brown or olive-colored shell
    • Black blotches at the center of each scute
    • Pink ring around nostrils during breeding season
    Habitat
    • Found in Sal deciduous and hilly evergreen forests
    • Distribution includes Southeast Asia, northern India, Nepal, Bhutan, Bangladesh, and other regions
    Indian Range Present in the Chhota Nagpur plateau and Himalayan foothills at elevations up to 1,000 meters
    Threats
    • Human exploitation for food and traditional medicine
    • Hunting, often with the help of dogs
    • Habitat degradation and illegal wildlife trade
    Ecological Role Significant species in its ecosystems but highly vulnerable to environmental changes and anthropogenic pressures
    Population Decline Significant population decline due to hunting, habitat degradation, and illegal wildlife trade, despite its wide distribution
    Conservation Status
    • Critically Endangered on the IUCN Red List
    • Appendix II under the CITES

     

    PYQ:

    [2013] Consider the following:

    1. Star tortoise

    2. Monitor lizard

    3. Pygmy hog

    4. Spider monkey

    Which of the above are naturally found in India?

    (a) 1, 2 and 3 only

    (b) 2 and 3 only

    (c) 1 and 4 only

    (d) 1, 2 and 3 and 4

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

    Shabd Portal provides technical terms in 22 Indian languages

    Prelims Only | Governance | Mains Paper 2: Governance, Transparency & Accountability, Citizens Charters

    Why in the News?

    The Commission for Scientific and Technical Terminology (CSTT), under the Union Education Ministry, has launched a unique website, shabd.education.gov.in, providing technical terms in all 22 official Indian languages.

    About Commission for Scientific and Technical Terminology (CSTT)

    • The Union Education Ministry established the CSTT in December 1960 to develop scientific and technical terminology in Hindi and other Indian languages.
    • It works to evolve, define, and standardize scientific and technical terms in Hindi and other Indian languages.
    • It publishes textbooks, monographs, and glossaries, and releases quarterly journals like Vigyan Garima Sindhu and Gyan Garima Sindhu.
    • It has developed over 450 glossaries, creating more than 3 million standardized words in Indian languages.
    • It prepares administrative glossaries for government departments and institutions to ensure consistent terminology in official documents.

    About the Shabd Portal

    • The portal aims to serve as a central repository for technical terminologies across Indian languages, hosting glossaries from CSTT as well as other institutions and agencies.
    • The portal currently hosts 450 dictionaries comprising 3 million words, making it a vast resource for users seeking scientific and technical terms in Indian languages.
    • Search Features:
      • Users can search for equivalent terms by language, subject, dictionary type, or language pairs.
      • Specific searches can also be made within a particular glossary or across the entire collection.
      • The platform also allows users to provide feedback on the terms prepared by the CSTT.

    Significance of the Portal

    • The launch comes amid efforts to promote technical education in Indian languages, including fields like medicine and engineering.
    • The portal is an essential step in ensuring accessibility of scientific and technical education in regional languages, supporting the vision of multilingual education.

    PYQ:

    [2014] Consider the following languages:

    1. Gujarati

    2. Kannada

    3. Telugu

    Which of the above has/have been declared as ‘Classical Language / Languages’ by the Government?

    (a) 1 and 2 only

    (b) 3 only

    (c) 2 and 3 only

    (d) 1, 2 and 3

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  • International Space Agencies – Missions and Discoveries

    Polaris Dawn: SpaceX’s Mission for First private Spacewalk

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

    SpaceX launched its Polaris Dawn Mission sending a four-person crew of civilians on a first-ever commercial spacewalk into Earth's Van Allen radiation belts.

    Why in the News?

    SpaceX launched its Polaris Dawn Mission sending a four-person crew of civilians on a first-ever commercial spacewalk into Earth’s Van Allen radiation belts.

    What is Polaris Dawn Mission?

    • It is a privately-funded space mission led by billionaire entrepreneur Jared Isaacman, in collaboration with SpaceX.
    • It is set to be the first non-government mission to conduct a spacewalk.
    • This 700km altitude will surpass the current record held by NASA’s Gemini 11 mission in 1966.
    • The mission will test new spacesuits designed by SpaceX to protect astronauts from high radiation levels encountered in the Van Allen Belts.

    What are the Van Allen Belts?

    • The Van Allen Belts are two zones of charged particles that surround Earth, held in the magnetosphere.
    • These belts were discovered in 1958 by American physicist James Van Allen.

    Why are the Van Allen Belts dangerous for Humans?

    • The Van Allen Belts are dangerous for humans because they contain high levels of radiation that can pose significant health risks to astronauts.
    • The belts are filled with charged particles that can cause radiation sickness, damage human tissues, and increase the risk of cancer. 

     

    PYQ:

    [2011] What is the difference between asteroids and comets?

    1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
    2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
    3. Comets show a perceptible glowing tail, while asteroids do not.

    Which of the statements given above is/are correct?

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

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  • Mother and Child Health – Immunization Program, BPBB, PMJSY, PMMSY, etc.

    Ovarian Cancer: Understanding the Silent Killer

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

    Why in the News?

    • In India, Ovarian Cancer ranks among top three cancers affecting women, accounting for 6.6% of all female cancer cases.
      • In 2022, India alone reported 47,333 new ovarian cancer cases and 32,978 deaths, emphasizing the critical need for awareness, early detection, and effective treatment.

    What is Ovarian Cancer?

    Details
    About Referred to as the “silent killer” due to its subtle symptoms like bloating, pelvic pain, loss of appetite, and frequent urination. Late diagnosis is common.
    Common Symptoms • Bloating
    • Pelvic/abdominal pain
    • Loss of appetite
    • Frequent urination
    • Indigestion, back pain, fatigue, and weight loss
    Cancer Subtypes • Type I tumours: Less common, early diagnosis, better prognosis
    • Type II tumours: More common, aggressive, diagnosed at advanced stages
    Screening • No effective screening tests available
    • CA125 blood test used post-diagnosis but not recommended for routine screening due to limited specificity
    Genetic Risk Factors • Linked to mutations in BRCA1/BRCA2 genes, increasing risk by up to 50%
    • Genetic testing aids in personalized risk management
    Endometriosis • Associated with a higher risk of certain ovarian cancers, though overall risk remains low
    Lifestyle Factors • Mixed evidence regarding talcum powder usage and its potential link to ovarian cancer
    • Hair products (dyes, straighteners) may increase risk, though further research is required
    HRT & Genetic Counselling • Hormone replacement therapy (HRT) is linked to a higher risk of ovarian cancer
    • Genetic counselling helps at-risk individuals with preventive measures

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  • Agricultural Sector and Marketing Reforms – eNAM, Model APMC Act, Eco Survey Reco, etc.

    The role of district agro-met offces in supporting farmers 

    Explained | Agriculture | Mains Paper 3: E-Technology In The Aid Of Farmers

    Why in the News?

    Last week, PTI reported that the India Meteorological Department (IMD) plans to reintroduce District Agro-Meteorology Units (DAMUs) as part of the Gramin Krishi Mausam Sewa (GKMS) scheme.

    Background: In 2018, the IMD set up 199 District Agro-Meteorology Units (DAMUs) in collaboration with the Indian Council of Agricultural Research to provide sub-district level agricultural advisories based on weather data. However, these DAMUs were shut down in March following an order from the IMD.

    What are Agro-Meteorological Advisories?

    • Agro-meteorological advisories provide farmers with critical information about weather conditions that affect agricultural practices. This includes forecasts related to rainfall, temperature, and wind speeds, which are crucial for planning sowing, harvesting, irrigation, and the use of fertilizers and pesticides.
    • These advisories are particularly important for small and marginal farmers, who make up about 80% of India’s farming community and primarily rely on rain-fed agriculture.
    • The advisories are disseminated in local languages, ensuring accessibility. They are shared through various channels, including text messages, WhatsApp groups, newspapers, and direct communication from DAMU staff.
    • By providing timely weather information, these advisories help farmers plan their agricultural activities effectively and ultimately contribute to enhancing crop yields and farmers’ incomes.

    Why Did the Government shut down the District Agro-Met Units (DAMUs)?

    • Agro-meteorological data was automated: The closure of DAMUs was influenced by claims from the NITI Aayog that agro-meteorological data was automated, which undermined the role of DAMU staff in preparing and disseminating agricultural advisories. This misrepresentation led to recommendations for privatization and monetization of the services previously offered for free.
    • Financial and Administrative Issues: The decision to shut down DAMUs was attributed to ongoing financial challenges, including delayed salary disbursements for DAMU staff, and administrative issues that hampered the program’s effectiveness.
    • Shift Towards Centralization: The government suggested transitioning to a centralized model for weather data collection and advisory services, which could potentially reduce the localized support that DAMUs provided to farmers.

    Way forward: 

    • Re-establish Local Support: Reinstate District Agro-Meteorology Units (DAMUs) to provide localized, targeted weather advisories and support, ensuring that small and marginal farmers receive timely, relevant information.
    • Improve Data Integration and Communication: Enhance the integration of automated weather data with localized advisory services, and streamline communication channels to reach farmers through various platforms effectively.

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  • Road and Highway Safety – National Road Safety Policy, Good Samaritans, etc.

    On the challenges to road safety in India  

    Explained | Economics | Mains Paper 2: Governance, Transparency & Accountability, Citizens Charters

    Why in the News?

    The India Status Report on Road Safety 2024 highlights India’s slow progress in reducing road fatalities and stresses the need for tailored approaches to improve road safety.

    What does the ‘India Status Report on Road Safety 2024’ state?

    • The report highlights India’s limited success in reducing road accident fatalities, despite the country’s efforts in other sectors. The report stresses that most Indian States are not on track to meet the UN Decade of Action for Road Safety goal to halve traffic deaths by 2030.
      • It emphasizes the connection between road construction, mobility, and safety,
    • Road traffic injuries remain a significant public health challenge. In 2021, these injuries were the 13th leading cause of death and the 12th leading cause of health loss (measured in Disability-Adjusted Life Years or DALYs).
    • The report reveals significant disparities in road traffic death rates across Indian States, with vulnerable groups such as motorcyclists and truck-involved crashes being particularly high.

    Note: The report used FIR data from six States and audits of State compliance with Supreme Court directives on road safety.

    Which States have the lowest rates of road accident deaths?

    • West Bengal and Bihar have the lowest rates of road accident deaths, with 5.9 per 1,00,000 people in 2021

    What is a crash surveillance system?

    • A crash surveillance system is a national-level database that records detailed data on road accidents, including specific variables like the mode of transport of victims.
    • India lacks such a system, with current data being aggregated from police station records, limiting the depth of analysis and effectiveness of interventions.
    • Implementing this system would enhance road safety management and allow for better evaluation of policy interventions.

    Way forward: 

    • Establish a National Crash Surveillance System: Implement a comprehensive database for road accidents to enable detailed analysis and improve targeted interventions for road safety. This would enhance data accuracy and guide more effective policies.
    • Prioritize State-Specific Road Safety Strategies: Tailor interventions to the unique challenges of each State, focusing on vulnerable road users like motorcyclists and improving safety infrastructure, such as helmet usage, traffic calming, and trauma care facilities.

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  • Waste Management – SWM Rules, EWM Rules, etc

    India generates highest plastic pollution in world 

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

    Why in the News?

    A study published last week in the journal Nature revealed that India is responsible for contributing one-fifth of the world’s plastic pollution.

    What did the Paris Agreement (2015) and the UN Environmental Assembly (2022) say on plastic pollution? 

    • Paris Agreement (2015): Primarily on climate change, the Paris Agreement doesn’t directly address plastic pollution. However, the agreement encourages countries to reduce emissions and promote sustainable practices. 
    • UN Environmental Assembly (2022): The UNEA agreed in 2022 to develop the first legally binding international treaty on plastic pollution by the end of 2024. Objectives: The treaty aims to curb plastic pollution through measures like phasing out single-use plastics.

    Challenges in Implementation

    • Lack of Cohesive Policies: There is often a disconnect between global agreements and national policies, leading to fragmented approaches that fail to address the scale of plastic pollution effectively.
    • Infrastructure Deficiencies: Many countries, particularly in the Global South, lack the necessary infrastructure for waste management, leading to high levels of unmanaged plastic waste. Inadequate public services and resources exacerbate this situation.
    • Economic Dependencies: Countries reliant on plastic production for economic growth may resist regulations aimed at reducing plastic use, complicating the implementation of international agreements.

    Why do we need more research on this issue? 

    • Understanding Environmental Impact: Comprehensive studies are needed to elucidate the sources and impacts of plastic pollution, including its relationship with climate change and public health.
    • Informing Policy Development: Research can guide policymakers in creating effective strategies for reducing plastic waste and improving waste management systems, ensuring that solutions are tailored to specific regional challenges.
    • Health Implications: As microplastics increasingly infiltrate ecosystems and human bodies, understanding their health impacts is critical for public health initiatives and regulatory frameworks.

    Way forward: 

    • Strengthen Global Plastic Reduction Targets: Implement binding international commitments to reduce plastic production, particularly single-use plastics, and promote sustainable alternatives, aligning with climate goals.
    • Improve Waste Management Infrastructure: Prioritize investment in waste management systems, especially in the Global South, to ensure proper collection, recycling, and disposal, reducing unmanaged plastic pollution.

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  • Indian Army Updates

    Exercise Yudh Abhyas, 2024

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

    Why in the News?

    • The 2024 edition of the India-U.S. Army bilateral exercise Yudh Abhyas has begun at the Mahajan field firing ranges in Rajasthan.
      • Concurrently, Phase-II of the Indian Air Force’s (IAF) largest multilateral exercise, Tarang Shakti, is underway in Jodhpur, with eight countries participating, including India.

    About Exercise Yudh Abhyas

    Details
    Type  Bilateral joint military exercise between India and the United States
    Inception Year 2004
    Frequency Annual
    Primary Objective Enhance military cooperation and joint operational capabilities, particularly focusing on counter-terrorism and counter-insurgency operations.
    Location Held alternately in India and the USA
    Earlier Edition (2023) Held at Fort Wainwright, Alaska, focusing on cold-weather operations and high-altitude warfare
    Focus
    • Counter-terrorism operations in semi-desert and desert terrains
    • Urban warfare (FIBUA – Fighting in Built-Up Areas)
    Participating Forces in 2024
    • Indian Army: 600 troops from the RAJPUT Regiment
    • US Army: 1-24 Battalion of the 11th Airborne Division, Alaska
    Tactical Drills in 2024
    • Joint planning sessions
    • Joint responses to terrorist actions
    • Combined field training exercises
    Significance 
    • Reflects the growing military partnership between India and the US
    • Enhances interoperability and strengthens strategic defence ties

     

    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

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  • Air Pollution

    India’s first ‘Teal Carbon’ study

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

    Why in the News?

    India’s first study on teal carbon was conducted at Keoladeo National Park (KNP) in Rajasthan’s Bharatpur district.

    Highlights of the Study

    • The study at KNP aimed to develop holistic solutions for climate change by understanding the potential of teal carbon in mitigating its effects.
    • It highlighted that degraded wetlands could release harmful methane and carbon dioxide into the atmosphere, further exacerbating climate challenges.
    • It suggested the use of biochar, a lightweight black residue comprising carbon and ashes.
      • This biochar can help reduce methane discharges and improve wetland conservation.
    • Specialized instruments like the LI-COR device would be required for real-time measurements of greenhouse gases to further the research.

    What is Teal Carbon?

    Details
    Definition Carbon stored in non-tidal freshwater wetlands, including in vegetation, microbial biomass, and organic matter.
    Key Sources Peatlands, freshwater swamps, natural freshwater marshes.
    Global Storage  Approximately 500.21 petagrams of carbon (PgC).
    Threats Pollution, land-use changes, water extraction, and degradation of wetlands.
    Comparison Distinct from black and brown carbon, which are produced by incomplete combustion of organic matter.
    Benefits of Teal Carbon Ecosystems
    • Greenhouse gas reduction
    • Increase in groundwater levels
    • Flood mitigation
    • Heat island reduction
    • Urban adaptation
    Conservation Importance Effective conservation of wetlands can enhance teal carbon pools, contributing to climate regulation and environmental sustainability.

     

    PYQ:

    [2021] What is blue carbon?​

    (a) Carbon captured by oceans and coastal ecosystems.​

    (b) Carbon sequestered in forest biomass and agricultural soils.​

    (c) Carbon contained in petroleum and natural gas.​

    (d) Carbon present in atmosphere.​

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