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Subject: Science and Technology

  • Biotechnology for Economy, Environment and Employment (BioE3) Policy

    Why in the News?

    After the BioE3 Policy approval in August 2024, the Department of Biotechnology (DBT) held consultations with State governments on setting up biomanufacturing facilities across India.

    What is the BioE3 Policy?

    • It is a national initiative by the Department of Biotechnology (DBT), Ministry of Science and Technology to promote biomanufacturing and a circular bioeconomy in India.
      • Biomanufacturing involves the industrial production of bio-products such as biopolymers, enzymes, smart proteins, functional foods, precision biotherapeutics, and climate-resilient agricultural products.
    • It focuses on scaling up biotechnology-based industries, enhancing research and innovation, and creating employment opportunities in sustainable bio-based sectors.
    • It aligns with India’s Net Zero carbon commitment and aims to make biomanufacturing a key driver of economic growth.

    Objectives and Features of the BioE3 Policy

    • Promoting Biomanufacturing: Establishing biomanufacturing hubs and biofoundries to produce bio-based chemicals, polymers, and enzymes.
    • Strengthening R&D and Innovation: Encouraging state-driven biotechnology policies, bio-AI hubs, and technology-driven bioindustries.
    • State-Centric Implementation: States will adopt at least two thematic areas under BioE3, focusing on local bio-based industries and sustainable agriculture.
    • Workforce Development: Expanding biotechnology training programs in Tier-II and Tier-III cities to build a skilled workforce.
    • Biosafety and Regulatory Compliance: Ensuring adherence to global biosafety standards and responsible biotechnology innovation.
    • Carbon Capture and Sustainability: Supporting carbon sequestration technologies and climate-resilient agriculture to mitigate climate change impacts.
    • Encouraging Private Sector Investment: Creating a business-friendly environment for biotech startups, public-private partnerships, and global collaborations.

    Programs Implemented Under the BioE3 Policy:

    • State-Centric BioE3 Cells: Dedicated cells will be established in State departments to coordinate investments, research, and policy execution.
    • Precision Biotherapeutics and Functional Foods Initiative: Research into next-generation bio-based medicines, smart proteins, and functional foods.
    • Carbon Capture and Bioeconomy Models: Development of technologies for carbon sequestration and sustainable bio-based industrial processes.
    • Public-Private Partnerships: Collaboration between government, industry, and research institutions to drive biomanufacturing investments and commercialization.

    PYQ:

    [2015] With reference to bio-toilets used by the Indian Railways, consider the following statements:

    1. The decomposition of human waste in the bio-toilets is initiated by a fungal inoculum.

    2. Ammonia and water vapour are the only end products in this decomposition which are released into the atmosphere.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

  • What is Brucellosis?

    Why in the News?

    An 8-year-old girl in Kerala, recently succumbed to brucellosis, a bacterial infection primarily caused by the consumption of unpasteurised milk.

    About Brucellosis

    • Brucellosis is a bacterial infection caused by Brucella species, primarily affecting cattle, goats, sheep, swine, and dogs.
    • Humans contract it through direct contact with infected animals, consuming contaminated animal products, or inhaling airborne agents.
    • According to the World Health Organization (WHO), the most common cause is the ingestion of unpasteurised milk or cheese from infected livestock.
    • Symptoms and Risk Factors:
      • Symptoms: Fever, weakness, weight loss, and general discomfort. The incubation period is 1-2 months, but most cases develop within 2-4 weeks.
      • At-Risk Groups: Farmers, butchers, veterinarians, hunters, and laboratory personnel handling infected animal tissues.
    • Treatment and Prevention:
      • Treatment: Doxycycline (100 mg, twice daily for 45 days) and Streptomycin (1 g daily for 15 days) as per medical advice.
      • Prevention: Vaccination of livestock, pasteurisation of milk, and public awareness campaigns to discourage the consumption of unpasteurised dairy products.

  • The financial toxicity of cancer care in India

    Why in the News?

    The financial strain of cancer is often ignored but can be the most harmful. It not only impacts the patient but also their family and future generations.

    What is the extent of financial toxicity faced by cancer patients in India?

    • High Treatment Costs: Cancer treatments, especially advanced options like immunotherapy, can be prohibitively expensive. For instance, a patient with oral cancer may face annual costs of approximately ₹10 lakh, adding to previous expenses that can total ₹25 lakh over several years. This financial strain often forces families to deplete savings or sell assets to afford care.
    • Impact on Families: Financial toxicity extends beyond the patient to their families, leading to severe economic consequences. Families may resort to selling properties or skipping meals to manage treatment costs, which can entrap them in a cycle of generational poverty.
    • Out-of-Pocket Expenses: A significant portion of healthcare costs is borne out-of-pocket by patients. For example, outpatient expenses can account for nearly 50% of total healthcare costs, which are not covered by insurance schemes like Ayushman Bharat.

    What are the contributing factors to financial toxicity in cancer care?

    • Inadequate Public Health Funding: India’s public health expenditure has historically been below 2% of GDP, resulting in insufficient healthcare infrastructure and personnel in public hospitals. This leads to delays in diagnosis and treatment, particularly for advanced cancer cases that require more costly interventions.
    • Limited Insurance Coverage: Existing insurance schemes primarily cover inpatient costs, leaving patients responsible for outpatient diagnostics and follow-up treatments. This gap significantly contributes to the financial burden on patients and their families.
    • Economic Disparities: Patients from low and middle-income backgrounds face additional hurdles in accessing cutting-edge treatments due to their high costs and limited availability in public health systems.

    What are the steps taken by the Indian Government? 

    • Health Minister’s Cancer Patient Fund (HMCPF): Established in 2009 under the Rashtriya Arogya Nidhi, this fund provides financial assistance up to ₹5 lakh for cancer treatment at designated Regional Cancer Centers (RCCs).
      • In emergency cases, assistance can go up to ₹15 lakh. The fund aims to support patients living below the poverty line.
    • Ayushman Bharat – Pradhan Mantri Jan Arogya Yojana (PM-JAY): This scheme offers health coverage of up to ₹5 lakh per family per year for secondary and tertiary care hospitalization, including cancer treatments. It is designed for low-income families and is operational across India.
    • State-Specific Schemes: Various states have their own initiatives:
      • Arogyasri Scheme in Andhra Pradesh: Provides free cancer treatment for families with an annual income below ₹5 lakh.
      • Free Chemotherapy in Odisha: Offers free chemotherapy treatment at district hospitals for poor cancer patients.
      • Financial Assistance in Punjab: Up to ₹1.5 lakh is provided for cancer treatment to eligible residents.

    What strategies can be implemented to mitigate financial toxicity? (Way forward)

    • Strengthening Public Healthcare: Increasing government investment in public health could improve access to affordable cancer care.
      • States like Delhi and Kerala have initiated schemes to support direct medical costs, but broader implementation is needed across India.
    • Supportive Measures for Non-Medical Costs: Initiatives such as discounted travel fares for cancer patients can alleviate some financial burdens associated with non-medical expenses. Expanding these programs could provide significant relief.
    • Role of Nonprofits and CSR: Nonprofit organizations play a crucial role in reducing out-of-pocket expenses through various support services. Increased funding from corporate social responsibility (CSR) initiatives could help these organisations expand their reach and impact.
    • Promoting Philanthropy: Encouraging individual philanthropy among wealthier segments of society could provide critical funding for cancer care initiatives and nonprofits focused on assisting low-income patients.
    • Policy Advocacy: Advocating for policies that address the gaps in insurance coverage and promote equitable access to cancer treatments is essential for reducing financial toxicity in the long term.

    Mains PYQ:

    Q What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poorer sections of the society? (UPSC IAS/2021)

  • [pib] GARBH-Ini-DRISHTI: India’s First Ferret Research Facility

    Why in the News?

    India’s first Ferret Research Facility, GARBH-Ini-DRISHTI, was inaugurated at Translational Health Science and Technology Institute (THSTI) in Faridabad to boost vaccine development and infectious disease research.

    About GARBH-INi-DRISHTI

    • GARBH-INi-DRISHTI is a data repository and information-sharing hub designed to provide comprehensive clinical and biological insights into maternal and child health.
    • Developed under the GARBH-INi program, it is one of South Asia’s largest pregnancy cohort datasets, offering access to clinical data, medical images, and bio-specimens.
    • The platform includes data from over 12,000 pregnant women, newborns, and postpartum mothers, enabling extensive research into maternal and neonatal health outcomes.
    • It is a collaborative initiative, involving India’s top research institutions and hospitals, ensuring scientific synergy in maternal healthcare.
    • Aims:
      • To enhance maternal and neonatal healthcare research through large-scale data accessibility.
      • To support global researchers in conducting transformative studies that can improve birth outcomes.
      • To provide early insights into pregnancy-related complications, fostering better diagnostic and preventive measures.
      • To develop predictive tools for conditions like preterm birth, ensuring better maternal health interventions.
    • Features:
      • Comprehensive Data Repository: Houses clinical, imaging, and bio-specimen data from thousands of pregnant women and newborns.
      • Advanced Data Access: Researchers can explore detailed datasets to study pregnancy outcomes, foetal health, and postnatal development.
      • Secure and Controlled Access:  Provides clear guidance on data usage and approvals, ensuring ethical research practices.
      • Global Research Platform: Enables nationwide and international collaboration, allowing researchers to work on common healthcare challenges.
      • Supports Policy and Decision-Making:  The data can be leveraged to shape maternal health policies, improve diagnostic protocols, and design effective interventions.

  • Second National Gene Bank

    Why in the News?

    As part of the Union Budget 2025-26, Finance Minister announced the establishment of a second National Gene Bank in India.

    About the First National Gene Bank

    • Established in 1996 by the Indian Council of Agricultural Research-National Bureau of Plant Genetic Resources (ICAR-NBPGR) in New Delhi.
    • Functions as India’s primary facility for preserving plant genetic resources (PGRs) to safeguard biodiversity.
    • Operates through 12 regional stations across the country for collection and storage of vital crop germplasms.
    • Preserves 0.47 million accessions (plant material for breeding and research) as of January 15, 2025.
    • Maintains genetic resources using four conservation methods:
      • Seed Genebank (-18°C) – Stores seeds for long-term conservation.
      • Cryogenebank (-170°C to -196°C) – Preserves plant tissues in liquid nitrogen.
      • In-vitro Genebank (25°C) – Maintains plant cultures in controlled environments.
      • Field Genebank – Conserves live plants for breeding and research.
    • Protects diverse crop groups, including cereals, millets, legumes, oilseeds, and vegetables.

    About the Second National Gene Bank

    • It aims to store over 10 lakh germplasm lines to strengthen food and nutritional security.
    • It will complement the first National Gene Bank and expand genetic conservation capacity.
    • It is designed to support both public and private sectors in conserving genetic diversity.
    • Features and Significance:  
      • Largest conservation facility in India, expanding germplasm storage capacity beyond the existing 0.47 million accessions in the first gene bank.
      • Ensures germplasm accessibility for future generations, preventing genetic erosion due to habitat loss or overexploitation.
      • Protects India’s agricultural heritage by preserving native, traditional, and rare plant varieties.
      • Aligns with global conservation efforts, including India’s Seed Vault in Chang La (Ladakh) and the Svalbard Global Seed Vault (Norway).
      • Promotes ex-situ conservation, ensuring crop diversity for future breeding, research, and sustainable farming.

    PYQ:

    [2021] What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poorer sections of society?

  • Samudrayaan Project

    Why in the News?

    In a major boost to India’s Deep Ocean Mission, Finance Minister allocated ₹600 crore for the Samudrayaan project under the Union Budget 2025-26.

    About Samudrayaan Project

    • Samudrayaan is India’s first manned deep-sea mission, designed for exploring ocean resources and conducting deep-sea research.
    • It falls under the Deep Ocean Mission (DOM) of the Ministry of Earth Sciences (MoES).
    • The project involves sending scientists in a deep-sea submersible to explore mineral resources and biodiversity at depths of up to 6,000 metres.
    • With this project, India will join an elite group of nations (USA, Russia, China, Japan, and France) capable of deep-sea manned exploration.
    • Aims and Objectives
      • Deep-Ocean Exploration: Study deep-sea resources, including minerals, hydrothermal vents, and marine biodiversity.
      • Technological Development: Advance underwater robotics, deep-sea mining technology, and manned submersible vehicles.
      • Sustainable Resource Utilization: Explore polymetallic nodules, which contain cobalt, nickel, manganese, and copper.

    Significant Features:

    • Manned Submersible: MATSYA 6000:
      • Being developed by the National Institute of Ocean Technology (NIOT), Chennai.
      • Developed under Samudrayaan to carry three crew members for up to 12 hours of exploration (extendable to 96 hours in emergencies).
      • Designed for operation at a depth of 6,000 metres.
      • Equipped with life-support systems and scientific sensors.
    • Exploration of India’s Exclusive Economic Zone (EEZ):
      • Mapping the ocean floor for mineral resources.
      • Conducting geological and environmental studies for sustainable deep-sea mining.

    PYQ:

    [2022] With reference to the United Nations Convention on the Law of Sea, consider the following statements:

    1. A coastal state has the right to establish the breadth of its territorial sea up to a limit not exceeding 12 nautical miles, measured from baseline determined in accordance with the convention.
    2. Ships of all states, whether coastal or land-locked, enjoy the right of innocent passage through the territorial sea.
    3. The Exclusive Economic Zone shall not extend beyond 200 nautical miles from the baseline from which the breadth of the territorial sea is measured.

    Which of the statements given above are correct?

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

  • China’s Artificial Sun creates Record in Fusion Research

    Why in the News?

    China’s Experimental Advanced Superconducting Tokamak (EAST), commonly referred to as the Artificial Sun, has set a new world record by sustaining a high-confinement plasma operation for 1066 seconds. The artificial sun reached an extreme temperature of 100 million degrees Celsius, surpassing its own previous record of 403 seconds.

    What is the EAST Project?

    • EAST is a nuclear fusion research facility developed by the Chinese Academy of Sciences (ASIPP) in 2006.
    • It aims to replicate solar fusion reactions to create a sustainable, clean energy source for future power generation.
    • The project serves as a global research platform for fusion experiments and advancing magnetic confinement technology.
    • It uses superconducting magnets to contain ultra-hot plasma, necessary for fusion.

    Comparison with Other Fusion Projects

    • China’s EAST (Experimental Advanced Superconducting Tokamak):
      • Record: 1066 seconds at 100 million degrees Celsius (2025).
      • Previous Record: 403 seconds at high confinement mode.
      • Goal: Develop a commercial fusion power plant.
    • Korea’s KSTAR (Superconducting Tokamak Advanced Research):
      • Record: 100 million degrees Celsius for 20 seconds (2020).
      • Goal: Sustain a longer plasma confinement period.
    • France’s ITER (International Thermonuclear Experimental Reactor):
      • Largest global fusion project, involving 35 nations.
      • Expected to achieve plasma ignition by 2035.
      • Focuses on demonstrating large-scale fusion feasibility.

    Significance of This Achievement

    • Record-Breaking Fusion Operation: EAST sustained plasma at 100 million°C for 1066 seconds, surpassing its previous record of 403 seconds.
    • Progress Toward Fusion Power Plants: Prolonged plasma confinement is crucial for achieving continuous, self-sustaining fusion reactions.
    • Potential for Clean Energy: Fusion produces zero carbon emissions and could serve as an unlimited energy source once commercially viable.
    • Global Competition: Other projects like ITER (France) and KSTAR (Korea) are also advancing fusion research, aiming for similar breakthroughs.

    Challenges in Nuclear Fusion

    • Extreme Temperatures: Plasma must be sustained at over 100 million°C, requiring high-energy input.
    • Material Limitations: Reactor components must withstand intense heat and radiation, yet no material can do so indefinitely.
    • Energy Input vs. Output: Current reactors consume more energy than they generate, preventing commercial viability.
    • Magnetic Confinement Issues: Plasma instability can disrupt reactions, making sustained fusion difficult.
    • High Costs: Fusion research requires expensive superconductors, cryogenics, and containment systems.

    Difference between Nuclear Fusion and Fission

    Nuclear Fusion Nuclear Fission
    Process Combines atomic nuclei to release energy. Splits heavy nuclei to release energy.
    Energy Output Much higher than fission. Comparatively lower.
    Fuel Source Hydrogen isotopes (Deuterium, Tritium)—abundant in seawater. Uranium-235, Plutonium-239—limited supply.
    Waste Production Minimal radioactive waste (helium byproduct). Produces long-lived radioactive waste.
    Environmental Risk No meltdown risk, completely safe. Risk of radiation leaks (e.g., Chernobyl, Fukushima).
    Current Feasibility Still experimental, not yet commercially viable. Commercially used in nuclear power plants.

  • Asteroid Bennu Samples hold Secrets of Life’s Origins

    Why in the News?

    NASA’s OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security–Regolith Explorer) mission has delivered samples from asteroid Bennu, revealing amino acids, nucleobases, and signs of ancient saltwater, key components in the origins of life.

    Key Findings of the Study:

    • 14 out of 20 amino acids essential for proteins on Earth were found.
    • All five nucleo-bases used in DNA and RNA were detected, indicating prebiotic chemistry beyond Earth.
    • Ammonia & Formaldehyde compounds can react under suitable conditions to form complex organic molecules.
    • It thus supports the idea that asteroids delivered key building blocks for life to early Earth.
    • Calcite, halite, sylvite, and trona were found, indicating prolonged exposure to liquid water.
    • Similar briny conditions have been observed on Ceres and Enceladus, suggesting the solar system had widespread environments suitable for organic chemistry.
    • Life on Earth exclusively uses left-handed amino acids, but Bennu samples show an equal mix, raising questions about why life evolved with this preference.

    About Asteroid Bennu  

    • Asteroid Bennu is a carbon-rich asteroid that orbits between Earth and Mars.
    • It is believed to be a primitive remnant of the early solar system, holding clues to the origins of life.
    • The asteroid is porous, with up to 60% empty space, affecting its collision potential with Earth in the distant future.
    • It periodically ejects material, classifying it as an active asteroid.
    • OSIRIS-REx was NASA’s first asteroid sample-return mission, launched in 2016 to study and collect material from Bennu’s surface.
      • The spacecraft arrived at Bennu in 2018, mapped its surface for two years, and collected samples in 2020.
      • It successfully returned the material to Earth in 2023.
    • The mission aimed to analyze Bennu’s composition, understand its water history, and study the organic molecules that may have played a role in the origin of life.

    Significance of the Study:

    • It strengthens the theory that asteroids contributed to life’s origins by delivering organic molecules and water to early Earth.
    • It confirms that essential ingredients for life were widespread in the early solar system, increasing the possibility of life beyond Earth.
    • It helps refine planetary defense strategies, as Bennu has a small chance of impacting Earth in the future.

    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

  • ISRO’s 100th launch: why this is significant?

    Why in the News?

    In its first launch of 2025, the Indian Space Research Organisation achieved the milestone of 100 launches.

    What does the 100th launch signify for India’s space capabilities?

    The 100th launch underscores ISRO’s growth since its establishment in 1969, showcasing its evolution into a reliable launch partner for both domestic and international satellites. 

    • Technological Advancement: This launch utilized an indigenous cryogenic engine, highlighting India’s advancements in rocket technology. The GSLV series has been instrumental in increasing payload capacity and efficiency during satellite launches, contributing to ISRO’s reputation as a formidable player in the global space arena.
    • Contribution to Navigation Systems: The NVS-02 satellite is part of India’s Navigation with Indian Constellation (NavIC) system, which enhances India’s capabilities in terrestrial, aerial, and maritime navigation.
      • This satellite will replace the IRNSS-1E satellite and improve the accuracy and reliability of navigation services across India and surrounding regions.

    What are the future plans for ISRO following this milestone?

    • Ambitious Missions: Following this milestone, ISRO aims to undertake several high-profile missions, including a sample return mission from the Moon, a mission to Venus, and the establishment of an Indian space station. These initiatives are part of ISRO’s broader goal to expand its capabilities and presence in space exploration.
    • Next Generation Launch Vehicle (NGLV): ISRO is developing a heavier rocket called the NGLV, which will be capable of carrying up to 30,000 kg to low Earth orbit. This vehicle will feature a reusable first stage to enhance cost-effectiveness in launches.
    • Expansion of Infrastructure: Plans are underway to build a third launch pad at Sriharikota to accommodate increased launch frequency and support human spaceflight missions alongside commercial launches.

    How will private sector involvement shape ISRO’s future missions?

    • Collaboration and Innovation: The PSLV-C60 mission exemplified successful collaboration between ISRO and private startups, allowing non-government entities to deploy payloads for in-orbit experiments.
      • This initiative fosters innovation by enabling startups to test their technologies using ISRO’s infrastructure, thereby reducing costs and encouraging diverse contributions to India’s space capabilities.
    • Transitioning Operational Responsibilities: ISRO aims to transfer more operational tasks to private companies, allowing them to manage activities traditionally handled by the agency.
      • This shift is intended to increase efficiency and scalability within the space sector, empowering private entities to take on significant roles in satellite launches and other space activities, thus expanding India’s overall capabilities.
    • Commercialization of Space Activities: The government has focused on increasing India’s share of the global space economy from 2% to 10% over the next decade through public-private partnerships.

    Way forward: 

    • Strengthening Public-Private Synergy: ISRO should continue fostering collaboration with private players by expanding access to launch infrastructure, streamlining regulatory frameworks, and incentivizing innovation through initiatives like IN-SPACe and NSIL.
    • Focus on Heavy-Lift and Reusability: Prioritizing the development of the Next Generation Launch Vehicle (NGLV) with reusable technology will enhance cost-effectiveness, positioning India as a competitive player in the global commercial space sector.

    Mains PYQ:

    Q India has achieved remarkable successes in unmanned space missions including the Chandrayaan and Mars Orbiter Mission, but has not ventured into manned space mission. What are the main obstacles to launching a manned space mission, both in terms of technology and logistics? Examine critically. (UPSC IAS/2017)

  • Labrys portucalensis F11

    Why in the News?

    A research team has discovered that Labrys portucalensis F11, a strain of aerobic bacteria from the Xanthobacteraceae family, can break down and transform multiple types of per- and polyfluoroalkyl substances (PFAS), a group of persistent environmental pollutants.

    About Labrys portucalensis F11

    • It is a type of bacteria that can break down harmful chemicals known as PFAS (Per- and Polyfluoroalkyl Substances).
    • It was first found in contaminated soil at an industrial site in Portugal.
    • Scientists have discovered that it can remove fluorine from certain chemical pollutants, making them less toxic.
    • PFAS are known as “forever chemicals” because they do not break down easily in nature.
    • Labrys portucalensis F11 can digest PFAS, helping to clean up polluted soil and water.

    How does it work?

    • It attacks the strong chemical bonds in PFAS, removing fluorine atoms.
    • It uses carbon from PFAS as food, helping it grow while reducing pollution.
    • It survives in oxygen-rich environments, making it ideal for cleaning up industrial waste sites.
    • In 100 days, it broke down 90% of PFOS, one of the most harmful PFAS chemicals.
    • Unlike most bacteria, it can also break down PFAS leftovers, making them even safer.

    Back2Basics: Per- and Polyfluoroalkyl Substances (PFAS)

    • Per- and Polyfluoroalkyl Substances (PFAS) are a group of synthetic chemicals widely used in industrial and consumer products for their waterproof, grease-resistant, and non-stick properties.
    • PFAS are commonly found in non-stick cookware (Teflon), waterproof clothing, food packaging, fire-fighting foams, and industrial applications.
    • These chemicals are known for their high resistance to heat, water, and oil, making them useful but also environmentally persistent.
    • Common Uses:
      • Non-stick cookware (Teflon), waterproof fabrics, stain-resistant coatings, and fire-fighting foams.
      • Industrial applications such as metal plating, food packaging, and electronics manufacturing.
    • Environmental and Health Concerns:
      • PFAS are often called “forever chemicals” because they do not naturally degrade and persist in soil, water, and living organisms.
      • Exposure to PFAS has been linked to cancer, liver damage, immune system disruption, and hormonal imbalances.
    • Regulatory Actions:
      • In 2023, the U.S. Environmental Protection Agency (EPA) designated PFOS (a type of PFAS) as a hazardous substance, requiring strict monitoring and clean-up efforts.
      • Governments worldwide are phasing out PFAS use and funding research into bioremediation technologies like the F11 bacteria-based clean-up approach.
      • In 2020, the Bureau of Indian Standards (BIS) adopted international criteria for sampling and testing certain PFAS compounds, such as perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS).
        • However, comprehensive policies to regulate or ban PFAS are still lacking.

     

    PYQ:

    [2013] Which of the following can be found as pollutants in the drinking water in some parts of India?

    1. Arsenic
    2. Sorbitol
    3. Fluoride
    4. Formaldehyde
    5. Uranium

    Select the correct answer using the codes given below:

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