Methane is a crucial fuel widely used for domestic and industrial purposes. However, when released in an uncontrolled manner—especially from landfills—it becomes a serious environmental hazard. Recent satellite-based evidence indicates that methane emissions from Indian landfills are significantly higher than official estimates, posing challenges to India’s climate commitments, urban environmental quality, and public health.

Key Findings on Landfill Methane Emissions

• Satellite observations reveal substantial underestimation of methane emissions from Indian landfills, indicating a major data and monitoring gap.

• Methane is a short-lived but highly potent greenhouse gas, with a global warming potential (GWP) 84 times that of CO₂ over 20 years.

• The integration of satellite monitoring, ground-level validation, and targeted policy interventions enables accurate identification of methane hotspots and supports effective waste management and energy recovery strategies.

What is Methane?

Definition and Composition

Methane (CH₄) is a chemical compound composed of one carbon atom bonded to four hydrogen atoms. It is the simplest alkane and the primary constituent of natural gas.

Physical Properties

Methane is colourless, odourless, tasteless, and lighter than air. Under complete combustion, it burns with a blue flame, producing carbon dioxide (CO₂) and water (H₂O) in the presence of oxygen.

Applications

• Methane constitutes 80–95% of natural gas, making it a major source of energy for cooking, heating, and electricity generation.

• It is an important industrial feedstock used in the production of hydrogen, ammonia, methanol, and other chemicals.

Methane Emissions: India’s Status

India is the third-largest methane emitter globally, after China and the United States.

• India emits approximately 31 million tonnes of methane annually, accounting for about 9% of global methane emissions.

• According to India’s Third Biennial Update Report (2016) to the UNFCCC, methane emissions (excluding LULUCF) amounted to 409 million tonnes of CO₂ equivalent.

• The waste sector contributes nearly 15% of India’s total methane emissions, primarily from landfills and wastewater treatment systems.

Major Sources of Methane

Natural Sources

• Wetlands, where organic matter decomposes under anaerobic conditions.

Anthropogenic Sources

• Agriculture:

  • Flooded rice paddies, which create oxygen-deprived conditions.

  • Enteric fermentation in livestock, especially cattle.

• Energy and Industrial Activities:

  • Fossil fuel extraction, processing, transportation, and combustion.

  • Fertilizer production and other industrial processes.

• Waste Sector:

  • Landfills and wastewater treatment plants, where organic waste decomposes anaerobically.

• Biomass Burning:

  • Burning of crop residues, firewood, and other biomass.

Global Warming Potential of Methane

Methane is a highly effective greenhouse gas due to its ability to absorb infrared radiation.

• Over a 20-year time horizon, methane is approximately 84 times more potent than CO₂.

• Over a 100-year period, its warming potential is 28–34 times higher than CO₂.
  This makes methane mitigation a high-impact, short-term strategy for climate change control.

Methane Cycle

The methane cycle refers to the natural processes through which methane is produced, released, and removed from the environment.

• Methane is produced by microorganisms under anaerobic conditions in wetlands, rice fields, landfills, and the digestive systems of ruminants.

• It is released into the atmosphere through both natural processes and human activities.

• Methane is removed primarily through oxidation in the atmosphere by hydroxyl (OH) radicals, and to a lesser extent by soil microorganisms.

Initiatives to Reduce Methane Emissions

India’s Initiatives

• Harit Dhara initiative to reduce methane emissions from cattle.

• Implementation of BS-VI emission norms to curb vehicular and fuel-related emissions.

• National Action Plan on Climate Change (NAPCC), which indirectly addresses methane through sectoral missions.

Global Initiatives

• Satellite-Based Monitoring: Missions such as CarbonMapper’s Tanager detect methane super-emitters, including major landfill sites like Ghazipur and Okhla.

• Global Methane Pledge (GMP): Launched at COP26 (2021), it aims to reduce global methane emissions by at least 30% by 2030 compared to 2020 levels. (India is not a signatory.)

• Global Methane Tracker (IEA): Focuses on reducing methane emissions from the energy sector.

• UNEP Initiatives:

  • International Methane Emissions Observatory (IMEO)

  • Oil and Gas Methane Partnership (OGMP)

Conclusion

Methane emissions from landfills represent a significant yet under-addressed climate challenge for India. Strengthening satellite-based monitoring, improving waste segregation and landfill management, and promoting waste-to-energy solutions can help India achieve rapid climate benefits while enhancing urban environmental health and supporting sustainable development goals.

The fight against sex-selective abortion in India has increasingly shifted to the digital sphere, where social media influencers, self-styled doctors, and religious figures promote unscientific gender-prediction myths. These practices circumvent the Pre-Conception and Pre-Natal Diagnostic Techniques (Prohibition of Sex Selection) Act, 1994 (PC&PNDT Act) and reinforce deep-rooted son preference, raising concerns related to gender justice, digital regulation, and reproductive rights.

Key Concerns at a Glance

• India’s skewed sex ratio is rooted in persistent son preference, sustained by cultural, economic, and social norms despite legal prohibitions.

• Enforcement of the PC&PNDT Act remains weak, marked by institutional gaps, low conviction rates, and the migration of illegal promotion to online platforms.

• Addressing the issue requires a holistic strategy, combining technology-enabled monitoring, swift justice, regulation of digital platforms, and sustained societal campaigns to value the girl child.

The PC&PNDT Act, 1994: An Overview

The PC&PNDT Act was enacted in 1994 to curb female foeticide and arrest the declining child sex ratio caused by the misuse of diagnostic technologies.
At the time of enactment, India’s sex ratio stood at 929 females per 1,000 males (Census 1991).

Recognising emerging challenges, the Act was significantly amended in 2003 to strengthen enforcement and explicitly prohibit pre-conception sex selection techniques.

Key Provisions of the PC&PNDT Act

Prohibition of Sex Selection

• The Act bans all procedures and techniques, including ultrasound, used for sex determination or sex selection of the foetus (Section 3A).

Regulation of Medical Facilities

• Genetic counselling centres, laboratories, and clinics must be mandatorily registered under the Act.

• Unregistered facilities are strictly prohibited from conducting any diagnostic procedures (Section 18).

Ban on Advertisements

• The Act prohibits advertisements—direct or indirect—related to pre-conception or pre-natal sex determination (Section 22).

Supervisory and Enforcement Mechanism

• Establishes the Central Supervisory Board, State Supervisory Boards, and Appropriate Authorities to oversee implementation and monitoring.

2003 Amendment: Key Enhancements

• Extended the Act’s scope to include pre-conception techniques.

• Explicitly brought ultrasound and imaging technologies under regulation.

• Strengthened enforcement powers, including search, seizure, and sealing of equipment.

Offences and Penalties

• All offences under the Act are cognizable, non-bailable, and non-compoundable.

• Punishments include 3–5 years of imprisonment and fines ranging from ₹10,000 to ₹1,00,000 or more, with enhanced penalties for repeat offences.

Son Meta Preference and Skewed Sex Ratios

Son Meta Preference

Son meta preference refers to a subtle form of son bias where families continue childbearing until the desired number of sons is achieved.
This fertility-stopping behaviour results in a skewed sex ratio of the last child and leads to neglect of daughters.

• It has contributed to an estimated 21 million “unwanted” girls, who often face nutritional, educational, and healthcare deprivation.

The Scale of “Missing Women”

Using economist Amartya Sen’s methodology, India’s stock of missing women reached nearly 63 million by 2014.
Over 2 million women go missing annually due to sex-selective abortion, infanticide, disease, and neglect.

“Missing females” refers to the shortfall of women and girls in a population compared to expected numbers, caused by discrimination and sex-selective practices.

Skewed Sex Ratios Despite Development

• India’s Sex Ratio at Birth (SRB) worsened from 1,060 to 1,108 males per 1,000 females between 1970 and 2014, defying global trends where development improves gender balance.

• This reversal highlights strong human intervention through sex-selective abortion, rather than natural demographic patterns.

Primary Reasons for Son Preference

Economic Factors

• Sons are viewed as future earners and old-age caregivers, particularly in the absence of strong social security systems.

• Patrilineal inheritance and illegal dowry practices reinforce the perception of daughters as an economic burden.

Cultural and Social Factors

• Patrilocality, where daughters move to the husband’s household after marriage, fuels the belief that investing in daughters benefits another family.

• Sons are seen as carriers of family lineage, name, and social status.

Religious Factors

• In certain traditions, especially among Hindus, sons are expected to perform last rites and ancestor worship, believed to ensure spiritual salvation of parents.

India’s Sex Ratio: Current Status

• Census 2011: 943 females per 1,000 males (up from 933 in 2001).

• Sample Registration System (SRS) 2023: Sex ratio at birth improved from 904 (2019) to 917 (2023).

• NFHS-5 (2019–21): 1,020 women per 1,000 men.

• UNFPA (2020): India accounts for 45.8 million of the world’s 142.6 million missing females.

Reasons for Lax Implementation of the PC&PNDT Act

Collusion and No-Complainant Nature

Sex selection thrives due to mutual incentives—families demand it and providers supply it—making complaints rare and enforcement difficult.

Institutional Weaknesses

• Inadequate staffing, funding, and training of Appropriate Authorities at district and state levels.

• Poor follow-up, inspections, and evidence collection.

Low Conviction Rates

• Only 617 convictions in 25 years, as noted by a Parliamentary Committee, reflecting weak deterrence.

Digital and Online Challenges

• The Act, conceived in a pre-digital era, struggles to regulate online promotion of gender prediction, rituals, and myths spread by influencers to mass audiences.

Deep-Rooted Social Demand

Persistent patriarchy and cultural norms continue to sustain demand for sex selection, encouraging circumvention of the law.

Professional Misconduct

Illegal sex determination remains highly lucrative, with the use of coded language, portable machines, and clandestine practices.

Strengthening Implementation of the PC&PNDT Act

Strengthening Institutional Framework

• Appoint dedicated and accountable Appropriate Authorities at all levels.

• Ensure timely registrations, inspections, and appellate mechanisms.

Leveraging Technology

• Mandate online submission of Form F for real-time tracking.

• Establish anonymous helplines and digital portals for reporting violations.

Regulating the Online Ecosystem

• Legally require digital platforms to proactively remove sex-selection content.

• Support credible health professionals and influencers to counter myths and promote gender equality online.

Legal and Procedural Reforms

• Set up fast-track courts for PC&PNDT cases.

• Expand the definition of “advertisement” to cover indirect and digital promotions.

Awareness and Behavioural Change

• Official reviews stress that law enforcement alone is insufficient.

• Sustained community engagement, education, and value-based campaigns are essential to challenge son preference.

Conclusion

The central challenge to the PC&PNDT Act lies not merely in enforcement gaps but in deep-rooted son preference, now amplified by digital platforms. Effective action requires modernising the law for the online era, ensuring swift legal deterrence, and fostering a societal shift that values the girl child. India must move from narrow clinic-based policing to a comprehensive ecosystem approach integrating law, technology, and social transformation.

Recent research has identified a previously unknown regulator of the autophagy process, opening new possibilities for developing therapies for neurodegenerative disorders such as Alzheimer’s disease and Parkinson’s disease, as well as cancer. This discovery highlights the growing importance of autophagy in understanding disease mechanisms.

What is Autophagy?

Autophagy is a fundamental cellular process through which cells identify, break down, and remove damaged or unnecessary components. It functions as the cell’s internal waste disposal and recycling system, ensuring cellular health and survival.

Through autophagy, a cell disassembles dysfunctional organelles, misfolded proteins, and other cellular debris, and recycles the usable components to generate new cellular structures and energy.

Mechanism of Autophagy (In Brief)

• Damaged or unwanted cellular components are enclosed within a double-membrane structure called an autophagosome.

• The autophagosome fuses with a lysosome, whose enzymes break down the contents.

• The resulting molecules are released back into the cytoplasm for reuse in cellular metabolism.

Importance of Autophagy

Cellular Maintenance

• Autophagy recycles damaged cell parts into fully functional components.

• It removes non-functional organelles and protein aggregates that otherwise accumulate and impair cell performance.

Defence Against Pathogens

• Autophagy plays a role in cellular immunity by destroying invading pathogens such as viruses and bacteria.

Role in Aging and Longevity

• Efficient autophagy helps maintain cellular homeostasis, which is especially critical in long-lived cells like neurons.

• Declining autophagy is associated with aging and age-related diseases.

Autophagy and Disease Linkages

Neurodegenerative Disorders

Disruption of the autophagy pathway leads to the accumulation of toxic proteins and damaged organelles.
This is a key feature of diseases such as:

• Alzheimer’s disease

• Parkinson’s disease

• Huntington’s disease

Since neurons are long-lived and do not regenerate easily, failure of autophagy severely affects their health.

Autophagy and Cancer

Autophagy has a dual and context-dependent role in cancer:

• Tumour Suppression (Early Stages)

  • Autophagy maintains genomic integrity and cellular stability.

  • It prevents malignant transformation by clearing damaged components.

• Tumour Promotion (Advanced Stages)

  • In established cancers, tumour cells can hijack autophagy to survive under stress conditions such as nutrient deprivation or chemotherapy.

  • This supports tumour growth and therapy resistance.

Significance of Recent Findings

• Identifying new regulators of autophagy can help in designing targeted drugs.

• Controlled modulation of autophagy offers therapeutic potential in:

  • Neurodegenerative diseases

  • Cancer

  • Age-related disorders

Conclusion

Autophagy is a vital cellular housekeeping mechanism that preserves cell health, defends against disease, and supports longevity. Advances in understanding its regulation provide promising avenues for treating complex diseases, but therapeutic strategies must carefully balance its protective and potentially harmful roles, especially in cancer.

The Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India (SHANTI) Bill, 2025 has been introduced in the Lok Sabha to overhaul India’s nuclear energy laws. It replaces the Atomic Energy Act, 1962 and the Civil Liability for Nuclear Damage (CLND) Act, 2010, creating a single legal framework that allows private and foreign participation in the civil nuclear sector while retaining state control over strategic nuclear activities. The bill aims to strengthen regulatory oversight, streamline liability provisions, and support advanced nuclear technologies to achieve India’s clean energy and net-zero targets.

Key Provisions of the SHANTI Bill

1. Replacement of Existing Nuclear Laws

The bill repeals both the Atomic Energy Act (1962) and CLND Act (2010), creating a consolidated legal framework for civil nuclear energy. This simplifies regulatory procedures, liability processes, and governance, reducing bureaucratic complexity that previously slowed nuclear projects.

Key Point: Single legal framework simplifies governance and regulatory compliance for nuclear projects.

2. Enabling Private and Joint Venture Participation

For the first time since Independence, the bill allows private Indian companies, joint ventures, and foreign entities to build, own, operate, and decommission nuclear power plants. This ends the monopoly of Nuclear Power Corporation of India Limited (NPCIL) in nuclear plant operations and opens the sector to much-needed capital and technical expertise.

Key Point: Private sector entry is essential to achieve India’s ambitious nuclear capacity goals.

3. Retention of Strategic State Control

While private participation is allowed, the government retains control over sensitive areas such as nuclear fuel production, heavy water manufacturing, and radioactive waste management. This ensures that national security and non-proliferation commitments are not compromised.

Key Point: Balances private participation with state control over strategic nuclear activities.

4. Statutory Status for Nuclear Regulator

The bill grants statutory status to the Atomic Energy Regulatory Board (AERB) and makes it accountable to Parliament. This strengthens the independence of the regulator, enhances transparency, and ensures stringent safety oversight for nuclear operations.

Key Point: Independent and accountable regulation is crucial for safety and public confidence.

5. Revised Nuclear Liability Framework

The SHANTI Bill removes supplier liability and caps operator liability based on installed plant capacity, rather than actual damage caused by an accident. Operators alone are responsible for compensation. This aligns India’s nuclear liability framework with international conventions and provides financial certainty for investors.

Key Point: Liability reforms encourage investment but raise concerns about public accountability in accidents.

6. Dedicated Atomic Disputes Tribunal

The bill proposes the creation of a specialized atomic disputes tribunal to resolve disputes related to nuclear operations. This provides regulatory certainty and increases investor confidence.

Key Point: A dedicated tribunal improves dispute resolution efficiency and clarity.

7. Facilitation of Advanced Nuclear Technologies

By clarifying regulations and enabling private participation, the bill encourages the deployment of Small Modular Reactors (SMRs) and indigenous reactor designs. This supports India’s transition to clean energy and strengthens long-term energy security.

Key Point: Promotes innovation and adoption of advanced nuclear technologies.

Core Concerns

• Weakening Accountability: Removing supplier liability and capping operator penalties may reduce accountability in the event of nuclear accidents.

• “Polluter Pays” Principle: Liability linked to plant size rather than actual damage may compromise this principle.

• Public Risk: Private firms may benefit financially while accident costs and long-term risks fall on the State and citizens.

• Historical Trust Issues: Past industrial disasters, such as the Bhopal Gas Tragedy (1984), highlight the need for stringent liability and safety norms.

India’s Nuclear Energy Landscape (2025)

• Current nuclear capacity: 8.18 GW, target: 100 GW by 2047.

• More than 20 operational reactors, all managed by NPCIL; additional projects planned.

• Focus on R&D for Small Modular Reactors (SMRs) and advanced technologies like Bharat Small Reactors, Molten Salt Reactors, and High-Temperature Gas-Cooled Reactors.

• Goal: 5 operational indigenously designed SMRs by 2033.

Need for Reforms in Nuclear Governance

1. Ambitious Capacity Targets: India aims to increase nuclear capacity to 22 GW by 2032 and 100 GW by 2047; NPCIL alone cannot meet this target.

2. Large Financing Gap: Achieving 100 GW requires ~Rs 15 lakh crore; government budget allocation is only Rs 20,000 crore.

3. Project Delays: Private participation can improve project execution and efficiency.

4. Technology & Innovation Needs: Accelerates deployment of SMRs and global best practices.

5. Fuel Security: Private sector involvement can strengthen uranium mining, processing, and imports.

6. Energy Security & Climate Goals: Nuclear complements renewable energy, providing low-carbon baseload power.

Measures to Strengthen Nuclear Governance

• Regulatory Independence: Ensure AERB operates without political interference and has financial autonomy.

• Balance Safety & Investment: Review liability caps periodically and index them to risk and inflation.

• Public Transparency: Mandatory disclosure of safety audits, emergency protocols, and accident reporting.

• Centre–State Coordination: Clear protocols for nuclear emergencies involving private operators.

• Waste Management: Establish enforceable rules for radioactive waste disposal and plant decommissioning.

Conclusion

The SHANTI Bill, 2025, represents a major reform in India’s nuclear sector, unlocking capital, technology, and execution capacity from the private sector. However, for these reforms to succeed, strong regulatory oversight, transparent safety measures, and a balance between investor incentives and public accountability are essential. If implemented carefully, these reforms can help India achieve its nuclear energy targets, ensure energy security, and support the net-zero 2070 climate goal.

The United States Army and Navy have recently completed integrated testing of the Dark Eagle Long-Range Hypersonic Weapon (LRHW). This marks a significant milestone in the operationalisation of the US hypersonic weapons programme and enhances joint-service strike capabilities.

About the Dark Eagle Hypersonic Missile System

• Dark Eagle is a hypersonic missile system developed for the United States Army.

• It is a non-nuclear, ground-launched weapon system, designed for conventional strategic strike missions.

• The missile component of the LRHW is being developed by Lockheed Martin in partnership with Northrop Grumman.

• The system is designed to conduct strategic attack missions, including:

  • Penetration of Anti-Access/Area-Denial (A2/AD) defence networks

  • Suppression of long-range enemy fires

  • Delivery of rapid, precision conventional strikes at critical targets

Key Features of the Dark Eagle System

Range and Deployment

• Dark Eagle is a land-based hypersonic weapon capable of striking targets at distances of up to 2,735 kilometres.

• It is deployed as a mobile ground-based battery, enhancing survivability and operational flexibility.

Launch Platform

• The system includes four Transporter Erector Launchers (TELs).

• Each TEL can carry and launch two missiles, allowing a single battery to fire up to eight hypersonic missiles.

• The launchers are supported by integrated command, control, and communications (C3) elements.

Missile and Propulsion Characteristics

• The Dark Eagle missile uses a solid-fuel, two-stage rocket booster.

• After launch, the missile ascends to the edge of space, beyond the reach of most conventional air defence systems.

• One stage carries a Common Hypersonic Glide Body (C-HGB).

Hypersonic Glide Vehicle (C-HGB)

• The C-HGB is an unpowered, highly manoeuvrable hypersonic glide vehicle.

• It can achieve speeds of up to Mach 17, making detection and interception extremely difficult.

• Unlike traditional ballistic missiles, the glide vehicle:

  • Travels through the upper atmosphere

  • Executes unpredictable manoeuvres

  • Approaches targets at variable trajectories, complicating enemy missile defence systems

Strategic Significance

• Dark Eagle significantly enhances the US military’s ability to conduct prompt global strike operations.

• Its speed, manoeuvrability, and range make it particularly effective against hardened, time-sensitive, and high-value targets.

• The system reflects the growing global emphasis on hypersonic weapons, especially amid strategic competition with China and Russia.