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Subject: Environment

  • COP28 : Understanding CCS and CDR

    ccd ccs

    Central Idea

    • At the COP28 climate talks in Dubai, discussions have centered on carbon capture and storage (CCS) and carbon-dioxide removal (CDR) technologies.
    • The interpretation of ‘abatement’ is crucial in understanding the role and limitations of CCS and CDR in climate action.

    Understanding CCS and CDR

    • CCS: This involves capturing CO₂ emissions at their source, such as in the fossil fuel industry and industrial processes, and storing them to prevent atmospheric release.
    • CDR: Encompasses natural methods like afforestation and technological approaches like direct air capture for absorbing and storing atmospheric CO₂.
    • COP28 Discussions: The term “unabated fossil fuels” in the draft texts refers to fossil fuel combustion without CCS. The texts advocate phasing out such fuels and enhancing emission removal technologies.

    Scale and Efficacy of CCS and CDR

    • IPCC’s AR6 Report: Heavily reliant on CDR for meeting the 1.5 degrees C temperature limit, assuming significant CO₂ sequestration by 2040.
    • Challenges: Direct mitigation to reduce emissions is daunting, making CDR crucial.
    • CCS Limitations: Effective CCS requires high capture rates, permanent storage, and minimal methane leakage from upstream processes.

    Concerns and Implications of CCS and CDR

    • Land Use for CDR: Large-scale CDR methods, especially technological ones, require significant land, raising equity, biodiversity, and food security concerns.
    • Impact on the Global South: CDR projects in the Global South could infringe on indigenous land rights and compete with agricultural land use.
    • Financial and Ethical Questions: The cost and responsibility of implementing CDR at scale raise questions about who should bear these burdens.

    Pitfalls of CCS and CDR

    • Potential for Increased Emissions: CCS and CDR could inadvertently create leeway for continued or increased greenhouse gas emissions.
    • IPCC Emission Scenarios: To limit warming to 1.5 degrees C, significant reductions in coal, oil, and gas use are required by 2050, with or without CCS.
    • Gas Emissions Pathways: Higher reliance on CCS and CDR could lead to emission pathways with a greater contribution from gas.

    Conclusion

    • Critical Decade Ahead: The next decade is pivotal in determining the viability and scalability of CDR methods.
    • Balancing Act: While CCS and CDR offer potential solutions for emission reduction, their implementation must be carefully managed to avoid unintended consequences and ensure equitable and effective climate action.
    • Future of Climate Negotiations: The discussions and decisions at COP28 regarding CCS and CDR will significantly influence the trajectory of global climate action and the pursuit of the 1.5 degrees C target.

  • Dubai Consensus for ‘transition away’ from Fossil Fuels

    dubai consensus

    Central Idea

    • The Dubai Consensus, a significant resolution towards reducing fossil fuel dependency, was adopted in COP 28, Dubai.

    Dubai Consensus

    • Key Clause: The resolution emphasizes transitioning away from fossil fuels to achieve net-zero emissions by 2050, aligning with scientific recommendations to limit global temperature rise.
    • Balance between Countries: The text reflects a compromise between developed and developing nations on climate action and responsibility.
    • Dilution of Language: Earlier drafts with terms like ‘phase-out’ were softened due to opposition from oil-dependent countries.
    • Coal Usage: The final text moderated its stance on coal, crucial for countries like India, calling for a phase-down rather than a rapid phase-out.
    • Methane Emissions: The consensus introduces a focus on reducing methane emissions by 2030, a potent greenhouse gas.
    • Natural Gas as a ‘Transition Fuel’: The text’s reference to natural gas as a transitional fuel could favor gas-producing countries and overlook the need for developed countries to close the finance gap in climate adaptation.

    New Funding Commitments and Future Goals

    • Diverse Opinions: While some nations expressed dissatisfaction with the agreement’s scope, others highlighted the lack of financial support for developing countries.
    • Financial Pledges: COP 28 saw commitments to the Loss and Damage Fund and pledges to decarbonize the global economy.
    • Focus on Renewable Energy: The resolution signals a move towards phasing out fossil fuels and boosting renewable energy and efficiency.

    India’s Historical Position on Climate Change

    • Emission Statistics: India, a major developing country, has historically contributed 3% of greenhouse gases (1850-2019), compared to higher percentages from the US and EU.
    • Per Capita Emissions: India’s per capita emissions are below the global average, but its development needs and population growth have made it the third-largest emitter.
    • Balancing Development and Emissions: India has been navigating the pressure to reduce emissions while addressing its developmental needs, particularly its reliance on coal.

    India’s Commitments and Challenges

    • Net Zero by 2070: India has committed to achieving a net-zero state by 2070, alongside expanding its renewable energy capacity.
    • Glasgow COP 2021 Agreement: Under pressure, India agreed to a ‘phase-down’ of coal use, highlighting the need for equitable treatment of all fossil fuels, including oil and gas.
    • Import Dependency: As a net importer of oil and gas, India has raised concerns about the focus on coal while other fossil fuels remain under-addressed.

  • Places in news: Kambalakonda WLS

    Kambalakonda

    Central Idea

    • The Eastern Ghats Biodiversity Centre situated along the Kambalakonda Wildlife Sanctuary’s periphery, near PM Palem in Visakhapatnam, features a new Nature Interpretation Centre.

    About Kambalakonda WLS

    Details
    Location Visakhapatnam district, Andhra Pradesh, India
    Establishment Declared in 1970 under the Wildlife Protection Act of India
    Area Approximately 71 square kilometers (27 square miles)
    Ecosystem Dry evergreen forests and scrubland
    Biodiversity Home to Indian leopards, deer species, wild boar, jackals, reptiles, birds, and medicinal plants
    Flora Predominantly dry evergreen forests with moist deciduous patches
    Tourism and Recreation Offers trekking, bird watching, and nature walks
    Accessibility Easily accessible from the city of Visakhapatnam

  • What does Unabated Fossil Fuels mean?

    Central Idea

    • At the ongoing COP28 climate summit, the term “unabated” fossil fuels has become a focal point in discussions about climate change mitigation.
    • The draft climate agreement mentions phasing down unabated coal, and US climate envoy John Kerry emphasized the need to phase out all unabated fossil fuels.

    Understanding ‘Unabated’ Fossil Fuels

    • Definition: “Unabated” fossil fuels refer to the use of coal, oil, and natural gas without reducing the associated CO2 and greenhouse gas emissions.
    • Contrast with ‘Abated’: “Abated” fossil fuels involve efforts to decrease emissions to an acceptable level, though the specifics of this level are not clearly defined.
    • IPCC’s Definition: The UN IPCC defines unabated fossil fuels as those without substantial reduction interventions for greenhouse gas emissions, suggesting capturing significant percentages of CO2 and methane.

    Role of Carbon Capture and Storage (CCS) Technologies

    • CCS Technologies: These technologies capture emissions from power stations or industrial facilities and store them underground.
    • Polarized Views: Oil and gas producers view CCS as essential for emission reduction, while climate activists and experts argue its effectiveness is limited.
    • EU and Nations’ Stance: The EU and several nations stated that CCS should not replace significant fossil fuel cuts and must not be overused.

    Effectiveness of Carbon Capture and Storage

    • IEA Report: The International Energy Agency reports that modern CCS technologies can capture about 90% of CO2.
    • IEEFA Study: A study by the IEEFA found that many flagship CCS projects underperformed or failed.
    • Climate Analytics Analysis: This analysis indicated that reliance on CCS could lead to substantial greenhouse gas emissions, potentially doubling CO2 emissions in 2023 if capture rates are lower than expected.

    Cost and Sustainability of CCS

    • High Costs: CCS technologies are expensive, with alternatives like wind, solar, and batteries being more cost-effective than retrofitting coal plants with CCS.
    • Sustainability Concerns: Scenarios achieving the Paris Agreement’s 1.5°C limit show a near-complete phase-out of fossil fuels by 2050, with minimal use of fossil CCS.

    Implications for COP28 and Beyond

    • Potential COP28 Declaration: The summit’s final declaration might include phasing out or down of unabated fossil fuels, raising concerns about continued fossil fuel use with CCS.
    • Risks of ‘Abated’ Fossil Fuels: Experts like Claire Fyson from Climate Analytics warn that promoting ‘abated’ fossil fuels could misdirect climate finance and greenwash emissions from fossil fuel use.

    Conclusion

    • Balancing Act: The COP28 discussions highlight the complexities of balancing fossil fuel use, technological solutions like CCS, and achieving climate targets.
    • Need for Caution: The debate underscores the need for cautious approaches to fossil fuel use and CCS, ensuring they align with broader climate goals and do not undermine efforts to reduce greenhouse gas emissions.

  • Specie in news: Mauritian Dodo

    Mauritian Dodo

    Central Idea

    • Mauritian authorities are now working to resurrect the human-caused extinct bird ‘Dodo’.

    About Mauritian Dodo

    Details
    Scientific Name Raphus cucullatus
    Physical Characteristics Large, flightless bird; about 1 meter tall, weighing 10-18 kg; large beak, stubby wings.
    Habitat Endemic to Mauritius, an island in the Indian Ocean; lived in forests and possibly coastal areas.
    Discovery and Extinction Discovered by Dutch Colonist in late 16th century; extinct by the late 17th century, last sighting around 1662.
    Causes of Extinction Human hunting and introduced species like rats, pigs, and monkeys.
    Diet Likely fruits, nuts, seeds, bulbs, and possibly small animals.
    Behavior Exhibited no fear of humans due to lack of natural predators.
    Cultural Impact Symbol of extinct and endangered species; featured in the phrase “as dead as a dodo.”
    Representation Depicted in literature and art, notably in Lewis Carroll’s “Alice’s Adventures in Wonderland.”

    Science of De-Extinction

    • Genetic Blueprint: The first step in de-extinction is obtaining a complete and accurate genome of the species.
    • Genome Sequencing: Paleo-geneticists have successfully sequenced the dodo’s genome using DNA from a museum specimen.
    • Comparative Genomics: The dodo’s genome is being compared with that of its closest extinct and extant relatives to identify unique dodo traits.

    Process of Resurrecting

    • Editing Genetic Material: The project involves editing the primordial germ cells (PGCs) of the Nicobar pigeon, the dodo’s closest living relative, to express dodo traits.
    • Interspecies Surrogacy: These edited PGCs will be inserted into chicken embryos, with chickens acting as interspecies surrogates to potentially birth a dodo offspring.
    • Physical Resemblance: The aim is to create a bird physically indistinguishable from historical accounts of the dodo.

    Challenges and Concerns

    • Scientific Hurdles: Experts emphasize the complexity of recreating a species and the time required for selective breeding to achieve dodo-like characteristics.
    • Habitat Restoration: Mauritius’ transformed landscape poses challenges for reintroducing the dodo, necessitating the control or removal of invasive species.
    • Alternative Habitats: The project considers reintroducing dodos to more pristine, uninhabited islands like Round Island and Aigrettes.

    Motivations behind the Project

    • Ecosystem Restoration: Reintroducing the dodo could help restore mutualistic relationships in Mauritius’ ecosystem, particularly in seed dispersal.
    • Conservation Technology: The techniques developed could aid in conserving and restoring other endangered avian species.
    • Symbolic Value: The project is driven by a desire to create ‘conservation optimism’, using the dodo as a symbol of hope in the face of human-caused extinctions.

  • Specie in news: Megamouth Shark

    Megamouth Shark

    Central Idea

    • In a historic moment for marine biology, a pregnant megamouth shark, a rare and elusive deepwater species, was discovered washed up on a beach in the Philippines.
    • This is only the 60th ever seen and the first ever observed to be pregnant.

    About Megamouth Shark

    Details
    Scientific Name Megachasma pelagios
    Discovery First discovered in 1976 off the coast of Hawaii.
    Appearance Large mouth, bulbous head, rubbery lip, dark grey/black body with a white underbelly.
    Size Up to 5.5 meters (18 feet) in length.
    Diet Filter feeder, consuming plankton, jellyfish, and small fish.
    Habitat Deepwater species, found at depths of 150 to 1,000 meters (490 to 3,280 feet).
    Behavior Rarely seen, swims with mouth open to filter food.
    Reproduction Presumed to be ovoviviparous, but details are largely unknown.
    Distribution Wide but rare distribution in the Atlantic, Pacific, and Indian Oceans.
    Conservation Status Least Concerned (IUCN)
    Scientific Interest Valued for its unique anatomy and role in the deep-sea ecosystem.

     

  • Global Cooling Pledge at COP28 

    Global Cooling Pledge

    Central Idea

    • At the COP28 climate summit on November 6, 63 countries, including the US, Canada, and Kenya, signed the world’s first pledge to reduce cooling emissions.

    Global Cooling Pledge

    • Term: This pledge aims to cut cooling emissions by at least 68% by 2050, addressing a significant source of greenhouse gases.
    • Current Contribution to Global Emissions: Cooling emissions, primarily from refrigerants and cooling energy, currently constitute 7% of global greenhouse gases.
    • Projected Increase: These emissions are expected to triple by 2050 due to rising global temperatures and increased demand for cooling appliances like ACs and refrigerators.

    Role of Refrigerants in Global Warming

    • Transition from CFCs to HFCs and HCFCs: Initially, chlorofluorocarbons (CFCs) were used in cooling appliances but were phased out by the 1987 Montreal Protocol due to ozone depletion concerns. They were replaced by hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons (HCFCs).
    • Greenhouse Gas Potency: Although HFCs and HCFCs don’t harm the ozone layer, they are potent greenhouse gases, with some forms like HFC-134a having a global warming potential 3,400 times that of CO2.

    Sources and Effects of HFC and HCFC Emissions

    • Leakage from Appliances: These gases often leak from damaged appliances or car air conditioning systems, especially at the end of their life cycle.
    • Contribution to Warming: The leakage of these gases contributes significantly to global warming, with the Climate and Clean Air Coalition (CCAC) highlighting their potency.

    Challenge of Cooling Energy

    • Electricity for Cooling: A significant portion of cooling emissions comes from the electricity used to power cooling appliances.
    • Fossil Fuel Dependence: Much of this electricity is generated from fossil fuels, particularly in developing countries, contributing to climate change.

    Vicious Cycle of Cooling Demand and Global Warming

    • Feedback Loop: Rising global temperatures increase the demand for cooling, which in turn contributes to more warming.
    • Growing Cooling Device Market: The number of cooling devices is expected to rise from 3.6 billion to 9.5 billion by 2050, with a potential need for 14 billion devices if cooling access is expanded globally.

    Solutions and Strategies

    • Kigali Amendment to the Montreal Protocol: Over 150 countries agreed in 2016 to reduce HFC consumption by 80% by 2047, potentially avoiding over 0.4 degrees Celsius of global warming by 2100.
    • Promoting Climate-Friendly Refrigerants: The use of natural refrigerants with lower or zero global warming potential is being encouraged.
    • Proper Disposal and Management: Effective management and disposal of refrigerants could significantly reduce CO2 emissions.
    • Alternative Cooling Methods: Focusing on building designs that reduce the need for air conditioners, such as improved insulation and ventilation, is crucial.

    Conclusion

    • The Global Cooling Pledge represents a significant step in addressing a key contributor to climate change.
    • This initiative underscores the need for global cooperation in combating the escalating challenges posed by climate change.

  • Species in news: Doubled-humped Camels

    camel

    Central Idea

    • Indian Army has inducted double-humped camels for patrolling and logistical support along the Line of Actual Control (LAC) in Eastern Ladakh.

    About Double-Humped Camels

    • The Bactrian camel (Camelus bactrianus), is also known as the Mongolian camel, domestic Bactrian camel or two-humped camel.
    • Their name comes from the ancient historical region of Bactria.
    • It is a large even-toed ungulate native to the steppes of Central Asia.
    • It has two humps on its back, in contrast to the single-humped dromedary.
    • The humps are plump and pliable. They store fat, which can be converted into water and energy when food and water resources are scarce during harsh winters.
    • A small population of Bactrian camel exists in the Nubra valley of Ladakh.

    Significance of deployment

    • These camels serve to patrol the LAC and provide logistical aid to troops in the difficult, barren landscape of Eastern Ladakh.
    • They can carry 170 kg and patrol up to 15 km without rest, surpassing the load capacity of mules previously used by the army.
    • The Army’s 14 corps is deploying these camels in strategic areas like Depsang and Daulat Beg Oldie (DBO) along the LAC.

    Try this PYQ from the 2019 CS Prelims:

    Q. Consider the following statements:

    1. Asiatic lion is naturally found in India only.
    2. Double-humped camel is naturally found in India only.
    3. One-horned rhinoceros is naturally found in India only.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

    [wpdiscuz-feedback id=”4pzhmg3s4f” question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

  • INC-3: Global Efforts to Combat Plastic Pollution

    Central Idea

    • The Intergovernmental Negotiating Committee (INC) met in Nairobi for its third round of negotiations under the UN Environment Programme.

    About Intergovernmental Negotiating Committee (INC)

    • INC is a committee that aims to develop a legally binding international instrument to end plastic pollution by 2025, as mandated by UNEA Resolution 5/14.
    • It began working in November 2022 at Punta del Este, Uruguay (INC-1).
    • The second meeting (INC-2) took place in May-June, 2023 at Paris, France.
    • INC is scheduled to complete its work by the end of 2024.

    Overview of INC-3

    • Event: The Intergovernmental Negotiating Committee (INC) met in Nairobi for its third round of negotiations under the United Nations Environment Programme.
    • Objective: To develop an international legally binding instrument to end plastic pollution worldwide, as mandated by UNEA Resolution 5/14.
    • Deadline: The INC is tasked with delivering a global plastics treaty by 2025.

    Significance of INC-3

    • Critical Stage: INC-3 was pivotal in negotiating the ‘zero draft’ text, which offered various options for core obligations and control measures.
    • Progress: Compared to INC-2 in Paris, INC-3 made substantive discussions on the treaty’s content.

    Key Aspects of the ‘Zero Draft’

    • Initial Strength: The zero draft proposed strong options for a legally binding treaty.
    • Dilution of Obligations: During negotiations, member states weakened core obligations, especially on primary polymer production, chemicals of concern, and trade.
    • Controversial Elements: The draft faced controversy over its scope and objectives, particularly regarding the production of primary polymers and lifecycle definitions.

    Financial Mechanism Discussions

    • Proposals: The draft included options like a plastic-pollution fee and reducing financial flow into high carbon footprint projects.
    • Opposition: Some countries, particularly those with vested economic interests, opposed these financial provisions.

    Trade in Plastics

    • Trade Restrictions: The treaty aims to address gaps left by the Basel Convention, but faced opposition regarding trade restrictions.
    • Misinterpretation of WTO Rules: Some countries misconstrued WTO rules to oppose trade restrictions, despite legal allowances for health and environmental protection.

    Challenges in Negotiations

    • Advocacy for Strong Provisions: African countries and Small-Island Developing States advocated for binding provisions, representing marginalized voices and emphasizing human rights and public health.
    • Rules of Procedure: INC-2’s unresolved debate on rules of procedure continued, affecting decision-making at INC-3.
    • Industry Influence: The presence of industry lobbyists indicated significant industry influence on the negotiations.
    • Stalling Tactics: Some countries used stalling and blocking tactics, delaying progress and expanding the draft text with national interest-driven changes.

    Outcomes and Takeaways from INC-3

    • Lack of Consensus: The meeting ended without consensus on intersessional work, hindering progress towards INC-4.
    • Exposure of Opposition: INC-3 highlighted the countries and industries opposed to a strong binding treaty.
    • Future Challenges: The lack of mandate adoption for the first draft development indicates significant challenges ahead in achieving a robust and effective global treaty on plastic pollution.

    Conclusion

    • INC-3’s outcomes underscore the complexities and challenges in formulating a global treaty on plastic pollution.
    • The divergent interests of member states, influenced by economic and industry considerations, pose significant hurdles.
    • The upcoming negotiations will be crucial in balancing these interests with the urgent need for effective global action to tackle the plastic pollution crisis.

  • Places in news: Mount Merapi

    volcano

    Central Idea

    • Mount Merapi in Indonesia has erupted yet again this year, spewing an ash tower 3,000 metres into the sky.

     

    Merapi Volcano: A Brief Overview

    • Location: Situated in Central Java, Indonesia, Merapi is aptly named “Mountain of Fire” in Javanese.
    • Activity: It ranks among the world’s most active and perilous volcanoes, known for frequent and often violent eruptions.
    • 2010 Eruption: The last significant eruption in 2010 led to over 350 fatalities and extensive damage to surrounding areas.
    • Tourist Attraction: Despite its dangers, Merapi attracts hikers and tourists drawn to its beauty and geological significance.

    Other active volcanoes in Indonesia

    volcano

    Indonesia is home to many active volcanoes, with over 120 active volcanoes located across the country. Some of the other major volcanoes in Indonesia include:

    • Mount Krakatoa: Located in the Sunda Strait, it’s notorious for the catastrophic 1883 eruption.
    • Mount Rinjani: On Lombok Island, it’s Indonesia’s second-highest volcano and a trekking hotspot.
    • Mount Tambora: Famous for the 1815 eruption, it caused the “year without summer” and is situated on Sumbawa Island.
    • Mount Batur: In Bali, known for scenic vistas and hot springs.
    • Mount Merbabu: The highest in Central Java, it’s a favored destination for climbers.

    Why so many volcanoes in Indonesia?

    • Pacific Ring of Fire: Indonesia’s location on this seismic hotspot explains its high volcanic activity.
    • Volcanic Density: With over 120 active volcanoes, Indonesia faces frequent eruptions, posing risks to its population and infrastructure.

    Back2Basics: Pacific Ring of Fire

    • Geographical Span: This 40,000 km horseshoe-shaped belt around the Pacific Ocean is a seismic hub.
    • Volcanic and Seismic Activity: Home to 75% of the world’s active volcanoes and 90% of earthquakes.
    • Tectonic Movements: The Pacific Plate’s collision with smaller plates leads to subduction, causing friction and pressure.
    • Resulting Phenomena: This tectonic activity results in frequent volcanic eruptions and earthquakes.
    • Countries Included: The Ring of Fire affects several regions, including Japan, Indonesia, the Philippines, Papua New Guinea, New Zealand, and the Americas’ west coasts.
    • Natural Resources: The region is rich in geothermal energy and minerals.