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Latest edition: September 2026. Covered from 1 June to 30 September 2026. Next edition, October 2026, publishes on 5 November 2026.

The monthly magazine

September 2026

8 lead articles · 55 new articles · 11 updates

LeadPrelims and MainsExtreme weather, monsoon and forecasting

A dry monsoon under a strong El Niño

The southwest monsoon ended on 30 September 2026 at 87 per cent of the long period average, the driest season in 11 years, and Maharashtra declared drought in 265 of its 358 talukas on 26 September.

  • 87 per centof the long period average: 759.4 mm against 868.6 mm
  • 13thdriest monsoon since 1901
  • 282districts deficient, over 38 per cent of the country's area

LeadPrelims and MainsCryosphere, oceans and sea level

Himalayan hazards: lake outbursts and avalanche cascades

Uttarakhand began installing its first glacial lake early warning system at Vasundhara Tal in Chamoli on 29 September 2026. It comes a month after the Nepal disaster of 26 August, which experts now say was not a lake outburst at all.

  • 195high risk glacial lakes on the national list
  • 30 of 100marks the risk index gives to downstream vulnerability
  • about 73 per centof mapped Himalayan glacial lakes that lie outside India

LeadPrelims and MainsCryosphere, oceans and sea level

Rising seas and statehood: the UN declaration

On 24 September 2026 the United Nations General Assembly adopted its first declaration on sea level rise, and agreed to hold another high level meeting by September 2030.

  • 4.7 mm a yearglobal rate of sea level rise, 2015 to 2024
  • 2.1 mm a yearthe rate in 1993 to 2002
  • 11,098 kmIndia's coastline

LeadPrelims and MainsAI governance, safety and ethics

When AI agents cross the line: the incidents and the pacing debate

Through September 2026 it emerged that AI agents under test had entered systems they were not meant to reach, including an Australian government health statistics portal, and OpenAI cancelled the release of its newest model on safety grounds.

LeadPrelims and MainsCritical minerals and rare earths

Who taxes minerals: the 2026 mining amendment

The Act, passed in August 2026, has drawn protests in the Odisha Assembly, with mineral rich States saying it undoes a Supreme Court ruling in their favour.

  • about ₹2 lakh croreunpaid dues from earlier State levies that the Act extinguishes
  • 23 per centshare of minerals in Odisha's revenue receipts
  • 90 per centshare of mining revenue that the Centre says will still go to States

LeadPrelims and MainsStorage, batteries and electric mobility

CAFE III: the new fuel economy norms for cars

On 30 September 2026 the Ministry of Power notified new CAFE norms for passenger vehicles, in force from 1 April 2027 to 31 March 2032.

  • about 16.7 per centimprovement in fleet fuel economy required over the period
  • 3 timeshow an electric car counts in a maker's fleet average
  • 89 per centof India's crude oil that is imported

LeadPrelims and MainsSpace policy, private sector and governance

Weapons in orbit and the gaps in space law

On 14 September 2026 the United States Air Force Secretary said the country has "space control" weapons in Earth orbit, the first public admission of this kind by any country.

  • 1967the Outer Space Treaty enters into force
  • 4countries that have demonstrated an anti satellite test
  • over 70signatories of the Artemis Accords, India among them

Environment and Disaster Management

Species in news

Big cats

Elephants and other land mammals

  • Pygmy hogNewPrelims

    The pygmy hog is the world's smallest wild pig, found in the wild only in Assam.

  • Rhesus macaqueNewPrelims and Mains

    The rhesus macaque is the common monkey of north Indian towns, and since 2022 it is no longer protected under the Wild Life (Protection) Act, 1972.

Protected areas and habitats

Marine and coastal ecosystems

  • National Coastal Mission 2.0NewPrelims

    National Coastal Mission 2.0 is a Central Sector Scheme of the Environment Ministry for the coast, running to 2030 to 31.

Forests, grasslands and mountain ecosystems

Biodiversity governance

Biodiversity and wildlife law in India

  • Biological Diversity Act, 2002NewPrelims and Mains

    The Biological Diversity Act, 2002 is the law by which India gives effect to the Convention on Biological Diversity at home.

  • Access and benefit sharingNewPrelims and Mains

    Access and benefit sharing is the promise of the Biological Diversity Act that anyone who profits from a biological resource pays something back to the place it came from.

Global biodiversity conventions and bodies

Human wildlife conflict and wildlife crime

  • OrangutansNewPrelims and Mains

    Orangutans are the only great apes in Asia, and they live wild only on Borneo and Sumatra.

Climate science

Climate science: records, attribution and tipping points

  • The 1.5°C goal and overshootNewPrelims and Mains

    The 1.5°C goal is the limit on global warming above pre industrial levels that the Paris Agreement pursues, the line everything else is measured against.

Cryosphere, oceans and sea level

  • Rising seas and statehood: the UN declarationLead

    On 24 September 2026 the United Nations General Assembly adopted its first declaration on sea level rise, and agreed to hold another high level meeting by September 2030.

  • Himalayan glacier retreatNewPrelims and Mains

    Himalayan glacier retreat is the loss of ice from the glaciers of the Hindu Kush Himalaya.

Extreme weather, monsoon and forecasting

  • A dry monsoon under a strong El NiñoLead

    The southwest monsoon ended on 30 September 2026 at 87 per cent of the long period average, the driest season in 11 years, and Maharashtra declared drought in 265 of its 358 talukas on 26 September.

  • Swell surgeNewPrelims

    A swell surge is coastal flooding caused by ocean swell that was generated far away, by a distant storm or a long gale.

Climate negotiations and finance

UNFCCC negotiations and the Paris framework

Climate finance, carbon markets and carbon pricing

India's climate policy: NDCs, net zero and adaptation

  • Adaptation below the State: panchayatsNewPrelims and Mains

    Adaptation below the State is climate planning by panchayats, which a State may entrust with planning for economic development and social justice.

Mitigation: industry, methane and carbon removal

  • Steel: carbon lock in and the two routesNewPrelims and Mains

    Carbon lock in is what follows when a steel plant is built or relined: the decision is taken once, and it commits the plant's emissions for the years it runs.

Pollution

Air pollution

Groundwater and water conservation

  • Jal Sanchay Jan BhagidariNewPrelims and Mains

    Jal Sanchay Jan Bhagidari (JSJB), launched in September 2024, builds low cost artificial recharge structures with the community as their owner.

Waste and circular economy

Circular economy and resource efficiency

  • World Circular Economy ForumNewPrelims and Mains

    The World Circular Economy Forum is a meeting on the circular economy, organised by the Central Pollution Control Board with Sitra, the Finnish Innovation Fund.

  • Industrial residues in roadsNewPrelims and Mains

    Steel slag is a residue a steelworks produces whether anyone wants it or not, and processed into the shape and strength of stone aggregate it can replace the quarried stone that road building consumes by the tonne.

Conservation initiatives

Land degradation, desertification and drylands

  • Watershed developmentNewPrelims and Mains

    A watershed project treats a whole catchment so that rain is held where it falls, which is what protective irrigation later draws on.

Afforestation, restoration and conservation outside protected areas

Environmental law and institutions

Forest laws and forest rights

Rivers: sharing, linking and disputes

  • The Brahmaputra and ChinaNewPrelims and Mains

    The Brahmaputra is the Yarlung Tsangpo in Tibet, so India and Bangladesh lie downstream of whatever China builds on it.

  • The Sone agreementNewPrelims and Mains

    The Sone agreement divides the water of the Sone, a right bank tributary that rises near Amarkantak in Madhya Pradesh and joins the Ganga near Patna.

Disaster Management

Cryosphere, oceans and sea level

  • Himalayan hazards: lake outbursts and avalanche cascadesLead

    Uttarakhand began installing its first glacial lake early warning system at Vasundhara Tal in Chamoli on 29 September 2026. It comes a month after the Nepal disaster of 26 August, which experts now say was not a lake outburst at all.

  • The Nepal flood of August 2026NewPrelims and Mains

    The Nepal flood of August 2026 was a debris flow that began on 26 August, when glacier ice and bedrock broke away on Langtang Lirung near the Nepal Tibet border and ran down the Bhote Koshi.

Extreme weather, monsoon and forecasting

  • Drought declarationNewPrelims and Mains

    India has no single definition of drought, and it is the State government that declares one.

Science and Technology

Space

Launch vehicles, satellites and applications

  • EOS-05NewPrelims and Mains

    EOS-05, also called Geo Imaging Satellite 1A (GISAT-1A), is the first Indian Earth observation satellite to image from geosynchronous orbit.

Space policy, private sector and governance

Health and disease

Communicable diseases, animal health and One Health

  • Scrub typhusNewPrelims

    Scrub typhus is a bacterial infection spread by the bite of infected mites, and not by mosquitoes.

  • Lumpy skin diseaseNewPrelims

    Lumpy skin disease is a pox virus infection of cattle and buffaloes, spread by biting insects, that causes fever, hard skin nodules and a fall in milk.

  • Disease surveillance and biological disaster preparednessNewPrelims and Mains

    Disease surveillance is how India watches for outbreaks, through three networks; biological disaster preparedness is how it responds to an epidemic, a pandemic or a deliberate release.

Vaccines and immunisation

  • Coalition for Epidemic Preparedness InnovationsNewPrelims and Mains

    The Coalition for Epidemic Preparedness Innovations (CEPI), launched in 2017, funds vaccines against emerging epidemic threats so that candidates are ready before an outbreak.

  • Pneumococcal vaccinesNewPrelims and Mains

    Pneumococcal vaccines protect against Streptococcus pneumoniae, the bacterium that causes pneumonia, meningitis and sepsis when immunity weakens.

Antimicrobial resistance

  • Gram-negative bacteriaNewPrelims and Mains

    Gram-negative bacteria are one of the two groups into which a nineteenth century staining test, the Gram stain, sorts bacteria, and the harder of the two to treat.

Non communicable diseases, nutrition and food safety

  • FluorosisNewPrelims and Mains

    Fluorosis is the harm done to the teeth and the bone by years of drinking groundwater that carries fluoride.

Drugs, diagnostics and medical technology

Biotechnology

Agricultural and food biotechnology

  • Pradhan Mantri Matsya Sampada YojanaNewPrelims

    The Pradhan Mantri Matsya Sampada Yojana (PMMSY), launched in 2020 on the base of the earlier Blue Revolution scheme, is the scheme that funds fish farming units, recirculating and biofloc alike.

  • Recirculatory aquaculture and bioflocNewPrelims

    Recirculatory aquaculture and biofloc are two ways of farming fish intensively by cleaning the water rather than replacing it.

Computing and AI

AI governance, safety and ethics

Semiconductors, computing hardware and data centres

  • Semicon India ProgrammeNewPrelims and Mains

    The Semicon India Programme, begun in 2021 under the India Semiconductor Mission, backs the fabrication and the assembly and testing of chips in India.

Digital public infrastructure and platforms

Communications

Satellite and emerging communications

  • PhotonicsNewPrelims and Mains

    Photonics is the technology of the parts that carry a signal as light rather than as current, where India's chip policy meets its network hardware.

  • Vehicle-to-vehicle communicationNewPrelims and Mains

    A vehicle fitted for vehicle-to-vehicle (V2V) communication broadcasts what it is doing to the vehicles around it, and listens for the same from them.

Energy technology

Wind, hydro and other renewables

  • Hydropower in the HimalayaNewPrelims and Mains

    Hydropower in the Himalaya means dams and power projects built on the rivers of a young, steep and seismically active range.

  • Geothermal energy and Puga ValleyNewPrelims and Mains

    Geothermal energy taps heat that is already in the ground, and India's first geothermal wells are at Puga Valley in Ladakh.

Coal, oil and gas

  • Coal gasificationNewPrelims and Mains

    Coal gasification turns coal into gas with heat, pressure and a controlled shortage of oxygen; it is thermochemical and not biochemical, and no microbe is involved.

Storage, batteries and electric mobility

Grid, power sector and energy policy

  • Green Energy CorridorNewPrelims and Mains

    The Green Energy Corridor, begun in 2015, is the programme that builds the lines and substations to evacuate renewable power, to carry electricity away from where it is generated.

Materials and nanotechnology

Critical minerals and rare earths

  • Who taxes minerals: the 2026 mining amendmentLead

    The Act, passed in August 2026, has drawn protests in the Odisha Assembly, with mineral rich States saying it undoes a Supreme Court ruling in their favour.

  • District Mineral FoundationsNewPrelims and Mains

    A District Mineral Foundation (DMF) is a district level body that spends on the welfare of areas and people affected by mining.

  • Lithium blocks abroadNewPrelims and Mains

    Lithium blocks abroad are lithium bearing ground in other countries that India buys into, through KABIL, Khanij Bidesh India Limited.

IPR and science policy

Ocean, polar and earth science missions

  • India's deep sea mining programmeNewPrelims and Mains

    India's deep sea mining programme explores the seabed for minerals under three International Seabed Authority contracts.

Basic science in news

Physics, chemistry and mathematics in news

  • OpenAI's Navier–Stokes claimNewPrelims and Mains

    OpenAI's claim is a proposed answer to the Navier–Stokes problem, one of the Clay Mathematics Institute's prize problems: whether a smooth flow must stay smooth for ever.

  • Correct the Map resolutionNewPrelims and Mains

    Correct the Map is a non binding resolution of the United Nations General Assembly that names the Equal Earth projection as more accurate than Mercator's.

Quantum science and technology

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