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GS Paper: GS3

  • JSWT finds Strongest Evidence of Life

    Why in the News?

    Scientists using the James Webb Space Telescope (JWST) have found signs of possible life on exoplanet K2-18 b by detecting gases usually produced by Earth’s biological processes.

    jswt

    Key findings of the Recent Study:

    • Scientists detected significant biosignatures in the atmosphere of K2-18 b, including dimethyl sulphide (DMS) and dimethyl disulfide (DMDS).
    • These gases, on Earth, are primarily produced by marine phytoplankton.
    • High concentrations of these gases suggest the possibility of microbial life, particularly in the planet’s oceans.
    • However, researchers caution that this is not definitive proof of life but a potential biosignature indicating biological processes.
    • Further studies and observations are needed to confirm whether these gases are biologically produced or the result of other processes.

    About James Webb Space Telescope (JWST):

    • JWST is a joint venture between NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA) launched in December 2021.
    • It is an orbiting infrared observatory that will complement and extend the discoveries of the Hubble Space Telescope, with longer wavelength coverage and greatly improved sensitivity.
    • Webb was formerly known as the “Next Generation Space Telescope” (NGST), and it was renamed in 2002 after a former NASA administrator, James Webb.
    • It isa large infrared telescope with an approximately 6.5-meter primary mirror.
    • JWST is positioned at the Earth-Sun L2 Lagrange point, 5 million km away.
    • It consists of a mirror, spanning 6.5 meters in diameter compared to Hubble’s 2.4 meters, and its specialised instruments optimised for infrared observations.
    • Key Objectives:
      • JWST observes deeper into the universe than Hubble.
      • Observes celestial objects from earlier epochs.
      • Enables the detection of light from the universe’s earliest stars, dating back over 13.5 billion years.
    [UPSC 2020] The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft.” The experiment in question refers to:

    Options: (a) Voyager-2 (b) New Horizons (c) LISA Pathfinder (d) Evolved LISA*

     

  • 6th Edition of Exercise DUSTLIK

    Why in the News?

    The 6th edition of India-Uzbekistan Joint Military Exercise DUSTLIK-6 commenced at the Foreign Training Node at Aundh in Pune, Maharashtra.

    About Exercise DUSTLIK

    • Exercise DUSTLIK is an annual event alternating between India and Uzbekistan.
    • It is named after Dustlik, a town in the Jizzakh region of Uzbekistan.
    • The first edition of the exercise was held in 2019 near Tashkent.
    • The 5th edition was held in Termez District, Uzbekistan.
    • 4th edition held in Pithoragarh, India, in February 2023.

    Objectives and Focus Areas:

    • Focus on physical fitness, joint planning, and tactical drills.
    • Emphasis on special arms skills and multi-domain operations.
    • Tactical drills include establishing command posts, intelligence centers, heliborne operations, and room intervention.

    Back2Basics: India’s bilateral exercises with Central Asian Countries

    Country Exercise
    Kazakhstan Ex PRABAL DOSTYK, Ex KAZIND
    Kyrgyzstan Ex KHANJAR
    Mongolia Ex NOMADIC ELEPHANT
    Tajikistan Ex Farkhor

     

    [UPSC 2008] Hand-in-Hand 2007’, a joint anti-terrorism military training was held by the officers of the Indian Army and officers of the Army of which one of the following countries?

    Options: (a) China * (b) Japan (c) Russia (d) USA

     

  • New frog species ‘Leptobrachium aryatium’ discovered in Assam

    Why in the News?

    A 21-year-long study has resulted in the discovery of a new frog species, Leptobrachium aryatium, named after Arya Vidyapeeth College in Assam.

    About the frog ‘Leptobrachium aryatium’

    • Leptobrachium aryatium, a newly discovered species of frog, was found in the Garbhanga Reserve Forest, located on the southwestern edge of Guwahati, Assam, near the Meghalaya border.
    • The species was identified through a re-analysis of past research and new studies on the Leptobrachium genus.
    • Key Features:
      • Distinctive Eyes: The frog has fiery orange-and-black eyes, setting it apart from other species in the genus.
      • Reticulated Throat Pattern: A unique reticulated pattern on its throat adds to its distinct appearance.
      • Smooth, Rhythmic Call: Emits a smooth, rhythmic call at dusk, a feature unique to this species in the genus.
      • Molecular and Morphological Distinctiveness: DNA analysis and physical studies confirmed it as a new species, distinguished by its unique call and appearance.
    [UPSC 2016] Recently, our scientists have discovered a new and distinct species of banana plant which attains a height of about 11 metres and has orange-coloured fruit pulp. In which part of India has it been discovered?

    (a) Andaman Islands* (b) Anaimalai Forests (c) Maikala Hills (d) Tropical rain forests of northeast

     

  • India’s first-ever Seed Germination Database

    Why in the News?

    On April 16, 2025, the Ecological Restoration Alliance-India (ERA-I) has released a first-of-its-kind seed germination database aimed at enhancing the success of growing native plants for ecological restoration.

    About the Seed Germination Database:

    • It was launched by the Ecological Restoration Alliance-India (ERA-I).  ERA was formed in July 2021, as an informal collective between practitioners, ecologists and individuals.
    • ERA-I collaborated with organizations like Auroville Botanical Gardens, NCF, and Wildlife Trust of India.
    • It features over 1,000 germination techniques for 465 native plant species found across India.
    • It aims to help restoration practitioners, nursery managers, and native plant enthusiasts improve success rates in growing plants for ecological restoration.
    • It is a free-access database and offers valuable information on germinating native plants crucial for restoration projects.
    • Native Plants Included:
      • The database features a diverse array of native plant species. These species are key to restoring balance in degraded ecosystems.
      • They are – Aegle marmelos (Wood apple), Bauhinia racemosa (Beedi leaf tree), Ficus benghalensis (Banyan), Withania somnifera (Ashwagandha), Ziziphus mauritiana (Indian jujube), Knema attenuata (Wild nutmeg), Lawsonia inermis (Henna), Madhuca longifolia (Mahua), Vachellia nilotica (Babool).

    Significance:

    • Native plants are essential for creating climate-resilient ecosystems.
    • Such database plays a vital role in ecological restoration.
    • It provides 1,000+ techniques for growing native plants, enhancing the success of restoration projects.
    • The database supports India’s Bonn Challenge commitment to restore 26 million hectares of degraded land by 2030.
    [UPSC 2016] In the context of food and nutritional security of India, enhancing the ‘Seed Replacement Rates’ of various crops helps in achieving the food production targets of the future. But what is/are the constraint/constraints in its wider/greater implementation?

    1. There is no National Seeds Policy in place.

    2. There is no participation of private sector seed companies in the supply of quality seeds of vegetables and planting materials of horticultural crops.

    3. There is a demand-supply gap regarding quality seeds in case of low value and high volume crops. Select the correct answer using the code given below:

    Options: (a) 1 and 2 only (b) 3 only * (c) 2 and 3 only (d) None of the above

     

  • [16th April 2025] The Hindu Op-ed: India, rising power demand and the ‘hydrogen factor’

    PYQ Relevance:

    [UPSC 2018] With growing energy needs should India keep on expanding its nuclear energy programme? Discuss the facts and fears associated with nuclear energy.

    Linkage: India growing energy needs and the role of a specific low-carbon source, which is relevant in the broader context of exploring other low-carbon alternatives like hydrogen for industrial use.

     

    Mentor’s Comment:  To achieve a net-zero economy, we need to significantly increase the use of electricity in various sectors. Currently, fossil fuels are used not only to generate electricity but also to provide heat and raw materials for industries. For example, carbon from coal is used in steel production, and hydrogen from natural gas is used to make ammonia for fertilizers. In the steel industry, hydrogen can replace carbon. So, a net-zero economy would involve using more electricity and hydrogen in industrial processes.

    Today’s editorial discusses the important role of hydrogen fuel in industries to help achieve a net-zero economy. This content is relevant for GS Paper 3 in the mains exam.

    _

    Let’s learn!

    Why in the News?

    To achieve a net-zero economy, which requires more use of hydrogen, hydrogen production and electricity storage need to work together efficiently.

    What is hydrogen’s role in achieving net-zero emissions, particularly in industry?

    • Replacement for Carbon in Steel-making: Hydrogen can replace carbon (from coal) to reduce iron ore in the steel industry, enabling low-emission steel production. Eg: Jindal Steel is implementing hydrogen-based Direct Reduced Iron (DRI) processes in its steel plants in Angul, India.
    • Feedstock for Fertilizer Industry: Hydrogen is used to produce ammonia, a key input for fertilizers. Currently sourced from natural gas, it can be replaced with green hydrogen to cut emissions. Eg: Green hydrogen is being utilized in ammonia plants to decarbonize agricultural inputs. ​
    • Energy Carrier for Hard-to-Electrify Sectors: Hydrogen provides high-temperature heat and energy where direct electrification is not feasible, such as in cement and chemical industries. Eg: Hydrogen-powered kilns are being explored in cement production to reduce carbon emissions.​
    • Storage and Use of Surplus Renewable Energy: Surplus electricity from solar and wind can produce hydrogen via electrolysis, storing energy for industrial use. Eg: Electrolysers operating during solar peak hours produce hydrogen for later industrial use, aiding in grid balancing.​
    • Enabler of Circular and Low-Carbon Economy: Hydrogen supports closed-loop industrial systems and enables the transition to a low-carbon industrial ecosystem. Eg: Industrial parks are utilizing shared hydrogen infrastructure for multiple processes, promoting sustainability.​

    Why is nuclear vital for meeting India’s future power needs?

    Reason Explanation Example
    Reliable Base Load Power Provides continuous, 24/7 electricity, unlike intermittent solar and wind. Kakrapar Atomic Power Station in Gujarat supplies stable power, reducing reliance on coal.
    Low-Carbon Energy Source Emits very low greenhouse gases, essential for India’s net-zero targets. One nuclear plant avoids millions of tonnes of CO₂ compared to coal-fired plants of similar capacity.
    High Energy Density & Land Efficiency Produces large energy output from a small land area, ideal for land-scarce regions. A 700 MW PHWR needs far less space than an equivalent-capacity solar farm.
    Energy Security & Indigenous Capability Indigenous PHWR tech reduces import dependency, boosting self-reliance. Bharat Small Reactors (BSRs) initiative supports local nuclear plants for industrial use.
    Supports Industrial & Developmental Goals Meets growing electricity demand from industries, EVs, and digital infrastructure. Indian Railways is exploring nuclear power to sustainably meet part of its future electricity requirements.

    How do electrolysers help avoid flexing nuclear plants?

    • Utilize Surplus Electricity: Electrolysers consume excess electricity (especially during low demand or high renewable generation), preventing wastage. Eg: During off-peak hours, nuclear plants continue running at full power, and electrolysers convert surplus electricity into hydrogen.
    • Avoids Technical Challenges of Flexing Nuclear: Flexing (ramping up/down) nuclear plants is technically complex and not cost-effective. Electrolysers provide a flexible load instead. Eg: Countries like France prefer operating electrolysers over reducing nuclear output to balance grid load.
    • Reduces Need for Electricity Storage: By producing hydrogen instead of storing electricity in batteries, electrolysers lower reliance on expensive energy storage systems. Eg: A hybrid system with electrolysers and minimal battery backup is more economical than large-scale battery-only setups.
    • Creates Industrial Value from Surplus Power: Hydrogen produced by electrolysers can be used directly in industries like steel and fertilizer, giving value to otherwise curtailed energy. Eg: Surplus nuclear power at night is used to produce hydrogen for ammonia production, supporting the fertilizer sector.
    • Maintains Economic Efficiency of Nuclear Plants: Electrolysers help nuclear plants operate at full capacity, maximizing their economic return by avoiding part-load inefficiencies. Eg: Operating a 700 MW PHWR continuously at full load ensures lower per-unit cost and higher return on investment.

    Which policy changes improve the synergy between hydrogen generation and electricity storage?

    • Redefining Green Hydrogen as Low-Carbon Hydrogen: Broaden the definition to include hydrogen from nuclear and other low-carbon sources, not just solar/wind. Eg: If hydrogen from nuclear is included under “low-carbon,” it becomes eligible for government incentives and boosts its adoption.
    • Integrated Planning for Hydrogen and Storage Infrastructure: Encourage policies that promote co-location of electrolysers and battery storage to optimize power use. Eg: A hybrid facility that stores electricity when prices are low and runs electrolysers when solar/wind generation is high.
    • Incentives for Grid-connected Electrolyser Projects: Offer financial and regulatory support to industries that install grid-responsive electrolysers. Eg: Time-of-use electricity pricing policies that make hydrogen production cheaper during surplus power hours.
    • Mandating Industrial Use of Green/Low-Carbon Hydrogen: Introduce mandates for sectors like steel and fertilizers to shift partially to low-carbon hydrogen. Eg: A policy requiring steel plants to use 10% green hydrogen by 2030 encourages investment in electrolysers.
    • Support for Hybrid Hydrogen-Storage Business Models: Develop regulations that allow joint operation and revenue models for battery storage and hydrogen production. Eg: A private power developer earns incentives both for stabilizing the grid (via battery) and producing green hydrogen.

    Where has the NPCIL planned the deployment of new 700 MW Pressurized Heavy Water Reactors (PHWRs) in India?

    • Kakrapar Atomic Power Station (KAPS), Gujarat: KAPS is already home to two operational 700 MW PHWR units (KAPS-3 and KAPS-4), with plans for further expansion. The successful commissioning of these units has demonstrated the robustness of the 700 MW PHWR design.
    • Rajasthan Atomic Power Station (RAPS), Rajasthan: RAPS-7, India’s third indigenously designed 700 MW PHWR, achieved first criticality in September 2024. RAPS-8 is under construction and is expected to be operational by 2026.
    • Gorakhpur Haryana Anu Vidyut Pariyojana (GHAVP), Haryana: GHAVP is set to host four 700 MW PHWR units, with GHAVP-1 and GHAVP-2 under construction and expected to be operational by 2028 and 2029, respectively.

    Way forward: 

    • Accelerating Infrastructure Development: India should fast-track the construction of 700 MW PHWR units across key sites like KAPS, RAPS, and GHAVP, ensuring timely completion to meet future energy demands and reduce reliance on coal.
    • Policy Support for Hydrogen and Nuclear Synergy: Government policies should incentivize the integration of nuclear power with hydrogen production, promoting hybrid systems that can utilize surplus nuclear energy for green hydrogen generation and enhance industrial decarbonization efforts.

  • India’s retail inflation slips to over 5-year low, opens door to more rate cuts

    Why in the News?

    The decline in food prices is seen as a major reason for the drop in inflation. After two rate cuts by the RBI, inflation is expected to stay below 4% in the coming months, which might lead to another rate cut of 50 basis points.

    What was India’s retail inflation rate in March?

    • March 2025 Retail Inflation Rate: India’s retail inflation eased to 3.34% in March 2025, marking the lowest rate since August 2019.
    • Comparison to Previous Month: This rate represents a decrease from February’s 3.61%, indicating a continued downward trend in inflation.
    • Primary Contributors to the Decline: The significant drop in food prices, particularly vegetables, eggs, and pulses, contributed to the decline. Eg, vegetable prices fell by 7.04% year-on-year in March.

    Why have food prices been a major factor in the decline of retail inflation?

    • Sharp Decline in Vegetable Prices: Vegetable prices saw a significant drop of 7.04% year-on-year in March 2025, compared to a small increase of 1.07% in February. This sharp fall in vegetable prices helped lower overall food inflation.
    • Lower Pulses Prices: Pulses prices fell by 2.73% in March, after a smaller 0.35% decrease in February, contributing to reduced food inflation.
    • Moderation in Overall Food Inflation: Food inflation in March 2025 decreased to 2.69% from 3.75% in February. This marked the lowest food inflation since November 2021, indicating a significant reduction in food price pressures.
    • Improved Farm Output: The moderation in food prices is partly due to better farm output, which led to a more stable supply of food items, especially vegetables and pulses, easing inflationary pressures.
    • Government and Central Bank Support: The government’s expectations for above-average monsoon rains in 2025 are likely to boost farm output further, maintaining lower food prices, which will continue to moderate overall inflation.

    How did the Reserve Bank of India respond to the easing inflation trend?

    • Second Consecutive Rate Cut: On April 9, 2025, the RBI reduced the key policy repo rate by 25 basis points to 6.00%, marking its second consecutive rate cut aimed at stimulating economic growth amid moderating inflation.
    • ​Shift to Accommodative Stance: The RBI changed its monetary policy stance from “neutral” to “accommodative,” signaling a more supportive approach to economic growth while maintaining vigilance over inflation.
    • ​Revised Inflation Forecast: The central bank projected the Consumer Price Index (CPI) inflation to average 4% for the fiscal year 2025–26, down from the previous forecast of 4.2%, reflecting improved inflation dynamics.
    • ​Lowered GDP Growth Estimate: The RBI revised its GDP growth forecast for the fiscal year to 6.5%, down from 6.7%, acknowledging the challenges posed by global uncertainties and trade tensions.

    What risks did the RBI highlight that could impact the inflation outlook?

    • Global Market Uncertainties: The RBI noted that ongoing global uncertainties, such as trade tensions (like the U.S.-China trade war), could disrupt supply chains and impact inflationary pressures in India. Eg, any further escalation in global trade disputes could lead to higher import costs.
    • Adverse Weather Conditions: The RBI pointed out that unpredictable weather events, such as unseasonal rains or droughts, could lead to food supply disruptions and push up food prices, affecting overall inflation. Eg, a poor monsoon could lead to shortages in key agricultural products.
    • Rising Global Commodity Prices: The central bank warned that fluctuations in global commodity prices, including oil and metals, could lead to higher domestic prices, contributing to inflation. Eg, a rise in global crude oil prices could increase transportation and fuel costs in India.
    • Supply Chain Disruptions: The RBI highlighted the risk of supply-side bottlenecks, especially due to external factors like geopolitical conflicts or supply chain disruptions caused by the COVID-19 pandemic. These could raise prices for imported goods and affect domestic inflation. Eg, disruptions in global electronics supply chains could lead to higher prices for tech products.
    • Core Inflation Pressures: The RBI also noted that core inflation, which excludes volatile items like food and fuel, remained persistently high at 4.1%, signaling that inflationary pressures could be more entrenched in the economy, which poses a risk to the inflation outlook. Eg, rising demand for services could contribute to sustained core inflation.

    Way forward: 

    • Strengthen Supply Chain Resilience: The government and RBI should work together to improve supply chain infrastructure and reduce vulnerabilities to global disruptions. This includes addressing logistical bottlenecks, improving domestic production capabilities, and diversifying import sources to mitigate the impact of geopolitical tensions and climate events.
    • Focus on Sustainable Agricultural Practices: To ensure stable food prices, long-term investments in sustainable farming techniques, irrigation systems, and better farm management practices are crucial. This will not only help stabilize food prices but also contribute to higher farm output and lower volatility in food inflation.

    Mains PYQ:

    [UPSC 2024] What are the causes of persistent high food inflation in India? Comment on the effectiveness of the monetary policy of the RBI to control this type of inflation.

    Linkage: Food inflation and the RBI’s role in controlling it, which is a key aspect of the scenario described in the article.

  • What is Tensor Processing Unit (TPU)?

    Why in the News?

    Recently Google introduced its seventh-generation TPU (Tensor Processing Unit), named Ironwood.

    About Ironwood

    • Ironwood is Google’s seventh-generation Tensor Processing Unit (TPU), designed to accelerate AI model training and inference with improved performance and efficiency.
    • It builds on previous TPUs, enhancing speed and efficiency for AI workloads.
    • It has been optimized for complex AI tasks, especially those requiring high-speed data processing for neural networks and deep learning models.
    • Initially used internally, Ironwood is now available via Google Cloud Platform, allowing businesses to harness its power without investing in dedicated hardware.

    What is a TPU?

    • A TPU is a specialized processor developed by Google to accelerate machine learning tasks, particularly those involving TensorFlow.
    • TPUs are optimized for tensor operations, crucial for training deep learning models, enabling faster data processing and high efficiency.

    How is TPU Different from GPU and CPU?

    CPU GPU TPU
    What is it? Central Processing Unit – General-purpose processor for various computing tasks. Graphics Processing Unit – Specialized for parallel processing, initially for graphics rendering. Tensor Processing Unit – Specialized processor designed by Google for accelerating machine learning tasks, particularly for AI and deep learning.
    Specialization General-purpose tasks (sequential processing) Parallel processing (graphics, machine learning) Specialized for AI tasks (tensor computations)
    Performance Slower for AI tasks due to sequential processing Faster than CPU for parallel tasks Fastest for AI tasks like matrix multiplication
    Efficiency Versatile but less efficient for AI operations Energy-efficient for parallel tasks Highly energy-efficient for machine learning
    Best for Running applications, managing systems Graphics rendering, machine learning Deep learning, neural network training

     

    [UPSC 2020] With the present state of development, Artificial Intelligence can effectively do which of the following?

    (1) Bring down electricity consumption in industrial units (2) Create meaningful short stories and songs (3) Disease diagnosis (4) Text-to-Speech Conversion (5) Wireless transmission of electrical energy

    Select the correct answer using the code given below:

    Options: (a) 1, 2, 3 and 5 only (b) 1, 3 and 4 only (c) 2, 4 and 5 only (d) 1, 2, 3, 4 and 5

     

  • China halts export of Rare Earth Magnets

    Why in the News?

    China has suspended exports of a wide range of critical minerals and magnets after US’s tariff embargo.

    What Are Rare Earth Elements (REEs) and RE Magnets?

    • REEs are a group of 17 elements in the periodic table, including Lanthanum (La), Neodymium (Nd), Europium (Eu), and Ytterbium (Yb).
    • Though not rare, they are found in low concentrations, making extraction challenging and costly.
    • Classification:
      • Light REEs (LREEs): Elements 57-63, such as La, Ce, Nd, and Sm.
      • Heavy REEs (HREEs): Elements 64-71, like Gd, Tb, Dy, and Er.
      • Scandium and Yttrium: Classified with HREEs due to similar chemical properties.
    • Rare Earth Magnets are powerful permanent magnets made from elements like Neodymium (Nd), Samarium (Sm), and Dysprosium (Dy).
    • They are far stronger and more efficient than traditional magnets, crucial for high-tech electronic applications.

    Global Supply Chain of REEs:

    • REEs are abundant but difficult to extract economically.
    • China alone dominates, producing 70% of the global supply and controlling 80% of the refining capacity. REEs are primarily mined from China’s Bayan Obo mine.
    • Australia, USA, Brazil, and Russia also contribute, though less significantly.
    • Refining also is largely controlled by China, though other nations are working to build their own refining capabilities to reduce dependency.
    [UPSC 2022] Consider the following statements:

    1. Monazite is a source of rare earths. 2. Monazite contains thorium. 3. Monazite occurs naturally in the entire Indian coastal sands in India. 4. In India, Government bodies only can process or export monazite.

    Which of the statements given above are correct?

    (a) 1, 2 and 3 only (b) 1, 2 and 4 only* (c) 3 and 4 only (d) 1, 2, 3 and 4

     

  • How govern-mentality exacerbates the problem of farmers’ stubble burning

    Why in the News?

    A new study by researchers Sujit Raghunathrao Jagadale and Javed M. Shaikh from IIM Amritsar looks at the issue of stubble burning by examining how government policies and market systems are failing to manage the problem effectively.

    Why do farmers continue stubble burning despite its harm to air quality?

    • Cost-Effective Method: Stubble burning is the cheapest way for farmers to clear their fields after harvesting. Eg: Farmers burn stubble to quickly prepare their land for the next crop, especially for wheat, without incurring high labor or machinery costs.
    • Lack of Affordable Alternatives: There are limited affordable and efficient alternatives to stubble burning. Eg: Farmers often do not have access to technology or subsidies for machines that can manage stubble, such as Happy Seeder or bio-decomposers.
    • Government’s Focus on High-Yield Crops: The Minimum Support Price (MSP) policy incentivizes the cultivation of wheat and rice, leading to monocropping. Eg: Farmers are encouraged to grow rice continuously, which results in an abundance of stubble that needs to be disposed of quickly.
    • Debt and Economic Pressure: Many farmers face financial pressures, including debt and low returns on their crops, which makes burning stubble a way to save time and money. Eg: Farmers often sell their crops to middlemen at low prices, leaving them with insufficient income to invest in sustainable farming practices.
    • Lack of Strong Enforcement or Support: Although stubble burning is penalized, enforcement of laws is weak, and farmers often feel the state does not provide adequate support for eco-friendly methods. Eg: Despite penalties, farmers feel little pressure to change practices when there is insufficient governmental support or infrastructure for alternatives.

    How does India’s MSP policy influence stubble burning?

    • Encourages Monocropping: The MSP policy promotes the cultivation of high-yield crops like rice and wheat, leading to monocropping, which results in a large amount of stubble that must be cleared. Eg: Farmers in Punjab often grow rice followed by wheat, creating a cycle where large quantities of rice stubble need to be burned to prepare the soil for the next crop.
    • Limits Crop Diversification: The MSP system prioritizes wheat and rice over other crops, making it economically unfeasible for farmers to switch to more sustainable practices or crops that would reduce stubble burning. Eg: Despite the potential for growing other crops, farmers focus on rice and wheat to benefit from MSP, leaving them with stubble that they have no economically viable option to manage.
    • Financial Constraints: The MSP rates for crops like rice and wheat have remained stagnant, making it harder for farmers to invest in alternatives to stubble burning, such as machinery or composting. Eg: With wheat MSP seeing only minimal increases, farmers struggle to cover costs for labor and inputs, leading them to resort to stubble burning as the most cost-effective option to clear fields.

    What has the government done in this situation?

    • Implemented Subsidies for Machinery: The government has provided subsidies for the purchase of machinery like the Happy Seeder to help farmers manage stubble without burning. Eg: The Punjab government has distributed equipment like straw management machines under the Sub-Mission on Agricultural Mechanization to reduce stubble burning.
    • Awareness Campaigns: The government has conducted awareness programs to educate farmers about the harmful effects of stubble burning and encourage them to adopt alternative practices. Eg: The Ministry of Agriculture and local bodies in states like Punjab and Haryana have launched campaigns to raise awareness about the environmental and health risks of stubble burning.
    • Legal Measures and Penalties: Various state governments, including Punjab, have imposed fines and penalties on farmers found burning stubble, aiming to deter the practice. Eg: The Punjab government introduced a fine for stubble burning, with penalties reaching up to Rs 2,500 for each violation, although enforcement remains challenging.

    Way forward: 

    • Promote Crop Diversification: Encourage farmers to shift from paddy to less water-intensive and non-stubble-generating crops through assured procurement and better MSP for alternative crops. Eg: Incentivize crops like millets and pulses to reduce stubble generation.
    • Strengthen Support and Infrastructure: Scale up access to sustainable stubble management technologies and ensure timely financial and logistic support to small and marginal farmers. Eg: Expand reach of Happy Seeder and bio-decomposer solutions through local cooperatives and custom hiring centers.

    Mains PYQ:

     [UPSC 2015] Mumbai, Delhi and Kolkata are the three Mega cities of the country but the air pollution is much more serious probelm in Delhi as compared to the other two. Why is this so?

    Linkage: Delhi’s severe air pollution, especially at certain times of the year, is caused by a combination of its location in the Indo-Gangetic Plain, nearby states burning crop stubble, and weather conditions that trap pollutants.

  • KATRIN Experiment

    Why in the News?

    The KATRIN (Karlsruhe Tritium Neutrino Experiment) has made a groundbreaking achievement by measuring neutrino mass with a new precision.

    About the KATRIN Experiment:

    • The KATRIN is located at the Karlsruhe Institute of Technology (KIT), specifically on its Campus North site in Karlsruhe, Germany.
    • It is aimed at measuring the mass of the electron antineutrino with sub-eV precision.
    • It has measured the mass of neutrinos by studying the beta decay of tritium, a radioactive form of hydrogen.
    • The mass was inferred by analyzing the energy of the emitted electrons.
    • Technological Setup:
      • A 70-meter-long beamline with a powerful tritium source.
      • A 10-meter-wide spectrometer to measure the energy of emitted electrons with high precision.
    • Key Findings:
      • KATRIN has set a new upper limit for neutrino mass at less than 0.45 eV/c² (8 × 10⁻³⁷ kg), nearly twice as precise as previous measurements from 2022.
      • Data Collection was based on five campaigns from 2019-2021, totalling 250 days of data.

    Neutrinos and Their Properties

    • Neutrinos are extremely light subatomic particles that rarely interact with matter, making them difficult to detect.
    • They are found in cosmic rays and solar radiation.
    • Properties:
      • Mass: Their small mass influences cosmic structure formation, such as galaxies and clusters.
      • Weak Interaction: They interact via the weak nuclear force, allowing them to pass through vast amounts of matter.
    • They are essential in particle reactions and play a key role in galaxy formation and the study of dark matter.

     

    [UPSC 2010] India-based Neutrino Observatory is included by the planning commission as a mega-science project under the 11th Five-year plan. In this context, consider the following statements:

    1.Neutrinos are chargeless elementary particles that travel close to the speed of light.

    2.Neutrinos are created in nuclear reactions of beta decay.

    3.Neutrinos have a negligible, but non-zero mass.

    4.Trillions of Neutrinos pass through the human body every second.

    Which of the statements given above are correct?

    (a) 1 and 3 only  (b) 1, 2 and 3 only  (c) 2, 3 and 4 (d) 1, 2, 3 and 4