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πŸ”† Key Takeaways on Exposomics and Environmental Health

πŸ“ Theme of World Environment Day 2025
βœ… Focuses on eliminating plastic pollution, particularly micro-plastics, which pose serious public health risks.

πŸ“ Need for Exposomics
βœ… A comprehensive approach to disease etiology and prevention must be adopted.
βœ… Exposomics focuses on understanding all environmental exposures throughout an individual’s life.

πŸ“ India’s Environmental Burden
βœ… India contributes 25% of the global environmental disease burden.
βœ… Rapid economic growth exacerbates environmental exposures and health risks.

πŸ“ Global Burden of Disease (GBD) Approach
βœ… Environmental risks caused 18.9% of global deaths and 14.4% of all disability-adjusted life years.

πŸ“ Challenges in Data & Research
βœ… Current environmental burden estimates are underdeveloped, failing to address complex environmental interactions.

πŸ“ Exposomics as an Emerging Method
βœ… Exposomics studies environmental exposures and their link to health, enabling more comprehensive research.
βœ… Requires interdisciplinary technologies like AI, wearables, and biomonitoring.

πŸ“ Policy and Infrastructure Needs
βœ… Building capacity for exposomics data generation and interoperable data repositories is essential for actionable results.
βœ… Immediate focus on creating a robust data ecosystem to enable health research.

#EnvironmentalHealth #Exposomics #PlasticPollution #India
πŸ”†Environmental Impact of Electric Vehicles (EVs)

βœ… Climate Benefit of EVs:
β€’ EVs help eliminate greenhouse gas emissions, playing a crucial role against climate change.

βœ… Air Pollution Concern:
β€’ Recent study shows EVs may worsen air pollution due to increased tyre wear from their greater weight.

βœ… Study Details:
β€’ Conducted by TIFR, IIT Bombay, and a US university.
β€’ Established how vehicle weight and speed affect the size of plastic particles released from tyre wear.

βœ… Tyre Particle Pollution:
β€’ Tyre wear emits microplastic and nanoplastic particles into the air.
β€’ Two degradation types:
β€’ Primary fragmentation: Larger particles from sudden braking or potholes.
β€’ Sequential fragmentation: Smaller airborne particles from prolonged use and friction.

βœ… Heavier Vehicles, Higher Emissions:
β€’ EVs are 15–20% heavier (300–900 kg batteries) than petrol/diesel cars.
β€’ Faster acceleration causes more tyre stress, friction, and heat.
β€’ Heavier, faster vehicles release more and smaller airborne particles, increasing pollution.

βœ… Global Implications:
β€’ With EV sales at 20% globally in 2024, this pollution concern is worldwide.
β€’ Calls for revisiting assumptions on EVs’ environmental friendliness.

βœ… Policy and Technological Responses:
β€’ Current air quality norms (PM2.5, PM10) don’t cover fine tyre particlesβ€”standards need updating.
β€’ R&D needed for tyres suited to heavier EVs.
β€’ Possible solutions include:
β€’ Capturing tyre particles at release points.
β€’ Improving road quality to reduce fragmentation.

#environment #EVs
πŸ”† Key Outcomes of COP29

πŸ“ New Collective Quantified Goal on Climate Finance (NCQG)
βœ… Triple climate finance to $300 billion annually by 2035.
➀ Mobilize $1.3 trillion per year by 2035 from public and private sources.

πŸ“ Carbon Markets and Article 6
βœ… Finalized Article 6 rules of the Paris Agreement for international carbon markets.
➀ Facilitates carbon credit trading and financing of climate actions.

πŸ“ Transparency
βœ… Enhanced Transparency Framework (ETF) finalized for tracking climate actions.

πŸ“ Adaptation
βœ… Baku Adaptation Roadmap launched to implement Article 7 of the Paris Agreement.
➀ Support program established for Least Developed Countries (LDCs) to implement National Adaptation Plans (NAPs).

πŸ“ Indigenous Peoples and Local Communities
βœ… Adopted Baku Workplan for knowledge exchange, capacity building, and integrating diverse knowledge into climate policies.

πŸ“ Gender and Climate Change
βœ… Enhanced Lima Work Programme on Gender extended for another 10 years.
πŸ”† Indian Biodiversity
βœ… Four global biodiversity hotspots are located in India, making it one of the most biodiverse regions in the world.
βœ… As of 2020-21, there are 981 protected areas, including 566 wildlife sanctuaries and 104 national parks.

πŸ“Wildlife
βœ… There are 3,167 tigers in India.
βœ… From 2019 to 2020, environmental crimes increased by 78%. (Source: Environment of India, State of 2022)


πŸ“Forest Conservation
βœ… 30% of Indian districts are susceptible to severe forest fires (CEEW).
βœ… 11% of global greenhouse gas emissions come from deforestation.


πŸ“Water Resources
βœ… 75% of families lack access to clean drinking water on their property. (Source: Aayog NITI)
βœ… By 2030, water stress is expected to affect 70% of India’s thermal power plants.

πŸ“ Water Pollution
βœ… 8 states comprise the majority of contaminated river segments, including Maharashtra, Assam, Kerala, Madhya Pradesh, Gujarat, Odisha, West Bengal, and Karnataka.
βœ… 70% of surface water in India is unsafe for human consumption. (Source: WEF)

πŸ“Climate Change
βœ… 40% of Indian districts are experiencing flooding and droughts interchangeably.
βœ… India has committed to achieving net-zero carbon emissions by 2070 at the 26th COP in 2021.

#mains #environment #GS3


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πŸ”† Sustainable Nickel Extraction
πŸ“ New Method: Uses hydrogen to replace carbon, offering a greener alternative.
βœ… Key Advantage: More energy-efficient and environmentally friendly.

πŸ“ Challenges
βœ… Requires initial investment in infrastructure and renewable energy.
βœ… High purity ferronickel produced, benefiting stainless steel production.

πŸ“ Sustainability
βœ… Scaling up the process could transform the nickel industry for carbon neutrality
πŸ”† Pollution Dome

πŸ“ Definition
βœ… Formed when unfavorable atmospheric conditions trap pollutants in urban areas, causing smog buildup.

πŸ“ Contributing Factors
βœ… Stagnant Air: Calm winds trap pollutants.
βœ… Temperature Inversions: Warm air traps cooler air, preventing vertical dispersion.
βœ… Geographic Bottlenecks: Mountains/valleys restrict air movement, trapping pollutants.

πŸ“ Additional Factors
βœ… Industrial Activity: Emissions from factories, power plants, and vehicles worsen pollution in stagnant air.
βœ… Unfavorable Weather Patterns: Systems like anticyclones limit atmospheric mixing, trapping pollutants closer to the ground.

#Geography
#environment
πŸ”† India’s Water Management Needs a New Direction

πŸ“ Global Context
βœ… 2025: UN’s International Year of Glaciers Preservation
βœ… Focus on mountain & glacier ecosystems as critical water sources

πŸ“ India’s Water Security Issues
βœ… India uses 60.5% of extractable groundwater
βœ… Over 60% of irrigation & 85% drinking water from groundwater
βœ… Punjab, Rajasthan overuse beyond 100%
βœ… Water table is declining, posing future risks

πŸ“ Key Frameworks Suggested
βœ… Source to Sea (S2S) Approach: Views water systems as a single continuum
βœ… Push for ridge-to-reef strategies, interlinked governance, and integrated catchment solutions

πŸ“ Action Steps
βœ… Shift from isolated management to holistic basin-level plans
βœ… Implement causal analysis for better decision-making
βœ… Revive 1987 National Water Policy with new ecological vision
πŸ”† Oil Pollution

πŸ“ Examples
βœ… Deepwater Horizon Oil Spill (2010): Largest marine oil spill in Gulf of Mexico.
βœ… Ennore Oil Spill (2017): Collision off Chennai coast, impacting marine life and fishermen.
βœ… MV Wakashio Spill (2020): Ship ran aground off Mauritius, spilling oil in a biodiversity-rich area.

πŸ“ Causes
βœ… Oil spills from tankers, offshore rigs.
βœ… Leakages from drilling, transportation.
βœ… Ballast water discharge, pipeline ruptures.

πŸ“ Consequences
βœ… Environmental: Marine life death, long-term damage to ecosystems.
βœ… Economic: Livelihood loss, high cleanup costs.
βœ… Health Hazards: Skin disorders, respiratory issues, contamination of seafood.

πŸ“ Steps Taken
βœ… International: MARPOL Convention, OPRC, IMO standards.
βœ… India: NOS-DCP, INCOIS oil spill trajectory model.

πŸ“ Way Forward
βœ… Enforce safety regulations, improve warning systems, develop response capacity, promote bioremediation techniques.

#environment #mains


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πŸ”† Sustainable Nickel Extraction
πŸ“ Breakthrough Method
βœ… High-purity ferronickel produced with carbon neutrality in mind.
βœ… Key Advantage: Eliminates extensive refining steps, making the process more sustainable.

πŸ“ Challenges Ahead
βœ… Scalability: High initial investment in infrastructure & renewable energy.
βœ… Further Research: Deeper study in thermodynamic kinetics and oxygen supply is needed.
πŸ”† Why Scientists Study Tardigrades 🦠

πŸ“ Tardigrades (also called water bears): Tiny, resilient, 8-legged organisms.
πŸ“ Space experiment: Sent to the ISS to study their survival and resilience.
πŸ“ Key question: How do tardigrades survive extreme space conditions like radiation, temperature changes, and vacuum?
πŸ“ Purpose: Discovering insights for human survival in space and crop protection on Earth.

#SpaceScience #Tardigrades #ISS
πŸ”† Water Stress: A Looming Crisis for India

πŸ“ NITI Aayog Study (2018)
βœ… 600 million Indians may be impacted by water stress
βœ… Could cause a 6% loss in GDP

πŸ“ Pollution & Resource Risk
βœ… 311 polluted river stretches in 30 States/UTs
βœ… 53% of solid waste remains untreated

πŸ“ Global Risk Alert
βœ… India flagged as high-risk in World Resources Institute’s Water Risk Atlas

⚠️ Urgent reforms in water management are critical for economic stability and resource sustainability.
World's rivers are leaking olg CO2 into air

🌍 Rivers Leaking Ancient COβ‚‚ into Atmosphere

πŸ“ Key Findings
βœ… 60% of COβ‚‚ from rivers comes from millennia-old deep soil carbon, low in carbon-14.
βœ… Rivers are leaking old COβ‚‚, returning ancient carbon to the air.

πŸ“ Implications
βœ… The leak rate matches the carbon absorbed by land ecosystems.
βœ… Carbon-cycle models may be undercounting land carbon losses due to this overlooked source.
🚦 New App Helps Commuters Pick β€˜Greener’ Routes

πŸ“ About DRUM App
βœ… Developed by IIT-Kharagpur, the DRUM app offers 5 route options: shortest, fastest, least pollution (LEAP), least energy (ECAP), and combined.
βœ… Real-time data helps reduce pollution exposure by 50% in Delhi (LEAP route).

πŸ“ Key Features
βœ… Uses GraphHopper + Mapbox for real-time traffic and route generation.
βœ… Routes with high pollution, energy use, or delay are eliminated.
βœ… Prioritizes health and sustainability, tested on Delhi roads.

πŸ“ Broader Goals
βœ… May extend to bikes, rickshaws, walking and integrate street sensors.
βœ… Aims to cut urban air pollution, which causes 72% of city deaths yearly.
πŸ”† MATSYA 6000: India’s Deep Ocean Mission

πŸ“ About the Mission
MATSYA 6000, part of the Samudrayan project, is designed to carry 3 humans to a depth of 6000 meters under the sea for scientific exploration and biodiversity research. India will become the 6th country capable of human submersible missions.

πŸ“ Key Components
βœ… Deep Sea Mining: Harvesting polymetallic nodules from the Central Indian Ocean Basin.
βœ… Manned Submersible: Enabling human presence at extreme depths for observation.
βœ… Ocean Climate Change Services: Understanding ocean dynamics and climate.
βœ… Marine Biotechnology: Exploring deep-sea biodiversity for sustainable resources.

πŸ“ SWOT Analysis
βœ… Strengths: Indigenous submersible, strategic ocean mapping, access to critical minerals.
βœ… Weaknesses: High costs, technological complexity, environmental risks.
βœ… Opportunities: Green energy, marine biotech, Indo-Pacific strategic leadership.
βœ… Threats: Ecosystem disruption, geopolitical tensions, regulatory challenges.

#environment
#GovernmentSchemes
πŸ”† Kerala Seeks Amnesty Scheme for Wildlife Trophy Declaration

πŸ“ What’s Proposed?
βœ… Kerala plans to request the Centre for an amnesty scheme allowing people to declare wildlife trophies in their custody, last permitted in 2003.
βœ… As per Section 40 of Wildlife (Protection) Act, 1972, undeclared trophies are illegal.

πŸ“ Who’s Eligible?
βœ… Legal heirs with valid ownership licenses issued by the Forest Department.
βœ… Only trophies inherited, not illegally acquired.

πŸ“ Penalties
βœ… Conviction may lead to 3–7 years jail + β‚Ή25,000 fine.

πŸ“ Centre’s Role
βœ… Final approval lies with the Union Ministry of Environment, Forest & Climate Change.
πŸ”† Climate Change: Sensitivity, Adaptability and Vulnerability

βœ… Sensitivity:
- Sensitivity refers to the extent a system is impacted by climate-related changes.
- It includes the response to changes in temperature or extreme weather events (e.g., crop yield changes due to temperature or coastal flooding due to sea level rise).

βœ… Adaptive Capacity:
- Adaptive capacity refers to a system's ability to adjust to climate change, including variability and extremes.
- This ability helps to manage potential damage and take advantage of opportunities or cope with the effects of climate changes.

βœ… Vulnerability:
- Vulnerability describes the degree to which a system is susceptible to, or unable to cope with, adverse effects of climate change.
- It depends on the magnitude, rate, and variation of climate change and its sensitivity and adaptive capacity.

πŸ“ Conclusion:
- Sensitivity, adaptability, and vulnerability form the three key factors that determine how a system will respond to climate change, with each factor influencing the overall resilience of the system.
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