Earth news

12 October 2026

1. 1

   New review says evidence of human-caused climate change is stronger than in 2009

   A new review led by Benjamin Santer of the University of East Anglia says more than three decades of climate 'fingerprint' research provide overwhelming evidence that greenhouse gas emissions are driving changes in Earth's climate. It argues that the scientific basis for the US Environmental Protection Agency's 2009 Endangerment Finding was already compelling and has grown stronger since. The authors are responding to a July 2025 US Department of Energy report that challenged fingerprinting; they call it 'deeply flawed'. Moves to revoke the finding have raised concerns about its impact on human health and on efforts to reduce emissions, and could open the door to ending other environmental regulations.

   Key facts

   • MIT's Susan Solomon says independently monitored climate aspects have been altered by warming in physically consistent ways.
   • The post-2009 period included the 10 warmest years in instrumental surface temperature records.
   • Santer's early research contributed to the IPCC's 1995 conclusion of a discernible human influence on global climate.
   • Co-authors include researchers from MIT, Colorado State University and the University of Edinburgh.
   • Published 12 October 2026 in Earth's Future, an AGU journal.

   Commentary

   The authors are defending the method as much as the conclusion, so the dispute is now about whether attribution research can continue. Santer's warning that the science is endangered turns a regulatory argument into one about the research base itself. Policy consequences would then depend less on evidence already gathered than on whether that work survives challenge.

   Sources: AGU Newsroom, Tech Explorist

2. 2

   EU member states finalise position for COP31 climate talks in Turkey

   EU member states want to get back onto the 1.5-degree warming path, even though it looks likely to be exceeded this year, and have called for rapid, science-based action rooted in multilateralism. Their focus is turning agreed commitments, including Nationally Determined Contributions, into concrete action while underscoring the planned phase-out of fossil fuels. German Environment Minister Carsten Schneider said Europeans must enter the talks with a united front. The approach follows disappointing COP30 outcomes in Brazil, amid the United States' withdrawal from climate negotiations. Ireland, which holds the rotating EU presidency, prepared the draft, and Irish minister Darragh O'Brien said the bloc will look to strengthen partnerships on electrification and the transition away from fossil fuels.

   Key facts

   • EU environment ministers finalised the bloc's position for COP31 on Monday at a meeting in Luxembourg.
   • The EU wants the UN mitigation work programme extended until 2040; it is currently due to expire in 2026.
   • An internal EU document seen by Reuters says there is "no scope" for new climate finance pledges at COP31.
   • EU member states say overshoot-peak-decline is the best remaining option to meet the 1.5-degree target.
   • COP31 takes place in Antalya, Turkey, in November.

   Commentary

   The notable move is away from reopening national pledges toward turning existing ones into measurable cuts, a shift that sidesteps the public disputes that have stalled talks. Leaving implementation to partnerships risks putting the burden on developing economies, which want financial support, and could make agreement at the upcoming talks harder.

   Sources: Yahoo, ESG News

3. 3

   Global Ocean Temperatures Set Record Margin Above Average in September 2026

   NOAA reported that ocean temperatures in September set a record for the fourth month in a row. The agency said El Niño, a natural climate pattern that warms surface waters in the tropical Pacific, drove record warmth in the central and eastern parts of that ocean. Land and combined figures did not set records. Counting land and ocean together, September trailed only 2023 in records dating to 1850, while land areas alone had their third-warmest September, a lower ranking than the combined figure.

   Key facts

   • The world's oceans were 1.98°F above average in September 2026, the largest monthly gap on record.
   • Land and ocean combined were 2.39°F above the 20th-century average in September 2026.
   • Sea ice covered 8.54 million square miles in September, the third-smallest September total in 48 years.
   • The first nine months of 2026 ranked second-warmest on record, behind 2024.
   • NOAA said 2026 will very likely finish among the five warmest years on record.

   Commentary

   The record is the predictable part; the telling detail is that September beat August by only 0.04 degrees, so the ocean is edging higher rather than surging. For anyone following this topic, that makes the ocean warmth look like a sustained condition rather than a one-month fluke.

   Sources: eponline.com

4. 4

   UN biodiversity talks at COP17 set for Yerevan, Armenia, from 19 to 30 October

   The 196 parties will meet in Yerevan, Armenia, from 19 to 30 October to settle the precise wording of dozens of legal texts under the UN Convention on Biological Diversity. The talks fall halfway between the agreement of the Kunming-Montreal Global Biodiversity Framework and its deadline for achieving its targets in 2030. The key agenda items are a global review of progress and finance. Finance is contested: global south countries want a separate financial mechanism under the convention's control, while global north countries largely prefer the existing one under the Global Environment Facility. That same disagreement led to the suspension of COP16 in Cali in October 2024.

   Key facts

   • The CBD has found countries are not on track to meet 22 of the Kunming-Montreal framework's 23 targets.
   • Target 19 of the Kunming-Montreal framework commits governments to mobilising at least US$200 billion a year by 2030.
   • Countries agreed a roadmap toward a permanent financial mechanism at COP16's resumed session in Rome in early 2025.
   • The Wildlife Conservation Society says COP17 success must be measured by results for nature, not simply commitments made.
   • The International Chamber of Commerce calls on governments to translate commitments into investable national biodiversity finance plans.

   Commentary

   The predictable part is haggling over bracketed wording; the harder test is whether governments can settle who controls the money. Both the conservation and business appeals treat finance as the bottleneck, implying the global review turns on money, not text. If the mechanism stalls again, the countries pressing for more international finance would be the ones left waiting.

   Sources: Carbon Brief, WCS Newsroom, International Chamber of Commerce

5. 5

   Trump administration removes case-by-case environmental reviews for winter oil exploration in Alaska's National Petroleum Reserve

   The Bureau of Land Management has removed case-by-case environmental review for most winter oil exploration on western North Slope federal lands, including seismic surveys and ice road construction. Under a categorical exclusion from the National Environmental Policy Act, the agency said past studies suffice and activities normally do not significantly affect the environment. The BLM said this lets developers act nimbly and boost domestic energy supply. The Alaska Oil and Gas Association welcomed it, while Alaska Wilderness League and The Wilderness Society said it gives companies free rein on public lands. Other scientific studies, including work by University of Alaska Fairbanks scientists, have found exploration can cause lasting permafrost damage and disturb denning polar bears.

   Key facts

   • The BLM's winter exploration rule took effect Friday with no public comment period.
   • A new management plan replaced an Obama-era one that protected about half the reserve, opening over 80% to leasing.
   • A record March lease sale drew $163 million in high bids, including Teshekpuk Lake area land under legal dispute.
   • The administration appealed a U.S. District Court ruling against it in June, after overturning a caribou habitat deal.
   • A BLM rule for development projects, requested by the Alaska Oil and Gas Association, accepts comments until November 9.

   Commentary

   What moved is the check on each project: exploration now skips the individual analysis that would have measured its effects. The shortcut looks weakest where scientific research flags specific damage, and a wrong assumption would fall on Nuiqsut-area residents and the subsistence traditions they rely on.

   Sources: Chilkat Valley News