Climate & Environment Story Archive: October 2026
Every Climate & Environment story on Standard Topic from October 2026, newest first. Each keeps its AI-generated write-up and its sources.
- Pennsylvania Democrats eye full control by flipping state Senate
Democrats have not held a trifecta in the state for over three decades, and next month's elections could change that. Governor Josh Shapiro may be a key factor in whether climate bills pass.
- Forecasters track new Eastern Pacific system off southern Mexico
The system, labeled Invest 94E, could reach at least tropical depression strength within two days and be named Vance if it strengthens further.
- Scientists and policymakers team up on floating wind despite delays
International partnerships behind floating turbines have so far survived Trump Administration tests, even as projects encounter setbacks.
- Candidates weigh climate change as US midterms near
Voters are worried about climate change even as they juggle other pressing concerns, and the issue's costs are climbing ahead of the vote.
- California releases fifth climate change assessment on warming impacts
The state's latest assessment projects major changes to daily life and coastlines as temperatures rise. Five Central Valley congressional districts rank among the fastest-warming in California.
- Nepal sets climate justice priorities for COP-31 conference
Nepal's agenda also covers climate adaptation, safeguarding the Himalayas and losses linked to global warming at the upcoming UN climate talks.
- Super Typhoon Champi, a Category 5 storm, moves away from Guam
Champi passed within 10 miles of Guam, bringing destructive winds, before moving out over open sea. It is now bound for Taiwan as a severe typhoon, and it is the third tropical cyclone to strike the island region since April.
- South Africa recommits to climate cooperation before COP31 talks
South Africa says it will push to turn global climate pledges into action at the UN COP31 conference. An official also stressed that prospective partners must adapt to changing climate conditions.
- Landslide-triggered floods kill five in central Nepal
Five people died and villages were wrecked after a blocked river sent floodwater downstream. A top UN official then called for global help for the recovery.
- Coastal storm off East Coast could become Tropical Storm Josephine
A nor'easter-type system off the Carolinas is bringing high winds and coastal flooding, and forecasters say it could take on tropical characteristics this week.
- Hurricane Trudy moisture raises flash flood threat across western US
Heavy rain and thunderstorms are set to hit California and the Southwest, with debris flows possible in previously burned areas.
- New study assesses two ways of pricing climate change costs
Researchers compared two methods for assigning a monetary value to climate change damage. One measures whether warming made extreme weather such as hurricanes more likely, the other whether it made such events more intense and destructive.
- Delegates gather in Yerevan for UN biodiversity summit
Thousands of officials have arrived in Armenia's capital for COP17, where governments face pressure to act on nature commitments. Almost 200 countries are expected to attend the talks.
- Bryson Fire puts Malibu residents on evacuation warning
Residents near Encinal Canyon were warned they may have to leave as the Bryson Fire started in the Woolsey fire's burn scar. Winds have eased and firefighters are gaining ground, though rain could bring its own hazards.
- Loggerhead turtles serve as early climate change warnings
Scientists say nest temperatures affecting sea turtles show how warming reshapes ecosystems, with warmer sand producing more females.
- Trudy eases to tropical storm after battering Mexico's Pacific coast
Downpours and strong gusts, with warnings of life-threatening flooding, hit Mexico's Pacific shore. Later reports said Trudy had weakened, and Los Cabos was no longer under threat.
- Record Pacific hurricane season continues as Simon alters course
Los Cabos and southern Baja are on alert after a storm changed its path, with watches or warnings possibly needed in Baja California Sur within a day or two.
- British research predicts puffins will decline significantly by 2050
Researchers foresee a sharp puffin population drop by mid-century, blaming climate change. A nature historian's new book also explores how humans once hunted the seabirds and how technology could help them survive.
- Climate panel scientists vow to finish report despite deadlock
Governments failed again to agree a release timeline for the panel's assessment, so nearly 120 authors pledged to finish on schedule. The panel's chair wants a swift resolution.
- Tropical Storm Rachel kills eight in Mexico, prompts California emergencies
Local authorities in Mexico's Baja California state said the storm's death toll reached eight.
- Arizona joins lawsuit against federal Colorado River water cuts plan
Arizona has moved to join a legal challenge to federal plans for cutting water along the river. The state argues the plan would devastate its economy.
- Brazil's Amazon forest loss drops to lowest level in decades
Figures released by INPE show forest clearing in the Brazilian Amazon fell 42% in the 12 months to July 31, 2026, to 3,335 square kilometers.
- Türkiye lines up climate adaptation plans before COP31 in Antalya
A forum in Ankara is focusing on early warning systems and science-based fixes before the COP31 climate conference in November, as heatwaves, floods and droughts worsen.
- Scientists warn of record-breaking El Niño, with impacts spreading worldwide
Forecasters say El Niño is likely to strengthen and could reach historic levels, with effects on winter weather and rainfall far from the Pacific.
- Super Typhoon Champi batters Guam before drifting away from the island
Champi, which reached Category 5 strength, lashed the islands over the weekend, and shelters were opened beforehand. It has since moved off, though forecasters expect it to regain strength before reaching the Philippines.
- Germany and France back looser EU car emissions rules
A provisional arrangement would require carmakers to cut emissions by 90% in 2035, which the environmental group Transport & Environment calls a historic mistake.
- Indonesia faces criticism over haze from forest fires
Haze from Indonesian land and forest fires has drawn anger, and a regional monitor has raised its top alert level for the southern zone.
- UN report finds nations lagging on 2030 nature protection target
Ahead of COP17 talks in Armenia, a key assessment finds some advances but says countries remain behind on protecting 30% of land and oceans.
- Bangladesh minister links climate shocks to slower growth
Speaking at a Dhaka forum, Abdul Awal Mintoo, the environment minister, said flooding and dry spells endanger farms, transport and factories.
- Fiji climate talks draw sharp criticism and praise
Health leaders want health central to the Pacific negotiations ahead of COP31, while one critic accuses Australia's Labor government of using the gathering to expand influence against China.
- Climate change weakens systems that keep HIV in check
Climate change does not alter the virus itself, but it disrupts the infrastructure that keeps HIV under control.
- Climate study says Africa could gain from fossil fuel exit
Researchers at the Potsdam Institute found countries most exposed to a fossil fuel shift produce just 6% of global output.
- Coastal storm off East Coast may become Subtropical Storm Josephine
Forecasters are watching a powerful low-pressure system off the Southeast coast that could strengthen into a named storm. Its slow movement could prolong high winds and flooding for beaches and coastal communities.
- Study links Hurricane Polo's rapid surge to warming and El Niño
Polo grew from tropical storm status into a Category 5 storm within 24 hours, and research names climate change as the larger factor.
- India earns a low mark in global climate-health assessment
A global review of how countries weave health into climate plans scored India at 2 of 32, with the findings flagging air pollution and extreme heat.
- Climate rules need household support, not just polluter fees, study says
A Nature Climate Change study by an international research team argues that charging polluters alone falls short. Reports warn that job losses and higher household costs mean climate policy must also include direct financial support for families.
- Administration moves to reexamine permit for operating offshore wind farm
The Trump administration is seeking to review a key approval for Revolution Wind, a $6.2 billion project already supplying power.
- Expert warns El Niño may worsen hunger in East, South Africa
Scientists now consider a record-setting El Niño nearly certain, and the climate pattern can shift rainfall and temperatures far beyond the Pacific.
- Climate change may raise neurological disease risks in Europe
Rising heat, poor air quality and spreading infections may burden the brain, with vulnerable communities most exposed.
- Alan Finkel calls scope 3 ruling a big mistake
Alan Finkel, Australia's former chief scientist, says a High Court ruling on scope 3 emissions is a serious error. He argues that emissions from legally operating power and industrial plants are for sovereign governments to tackle.
- Climate report finds seven of 16 Earth indicators at record extremes
Researchers writing in the journal BioScience say Earth's systems are destabilizing, some at a faster pace. Their seventh annual review tracks 16 measures, including emissions and ocean heat.
- Scientists test nature-inspired warning patterns on wind turbine blades
Researchers used a video-game-style setup to see whether warning patterns modeled on snakes and poisonous frogs could keep great tits from colliding with turbine blades. Such collisions can kill birds, so the work aims to reduce that danger.
- Trudy becomes Category 3 hurricane as it nears Mexico
Forecasters expect the storm to strengthen further before reaching the southwestern coast this weekend. It was a Category 1 hurricane on Thursday before rapid intensification.
- New review finds stronger proof that people are warming the planet
Researchers say the evidence that human-produced greenhouse gases are heating the planet has grown stronger than before. A separate analysis using fresh observations and refined methods reached the same conclusion, despite a contrary U.S. government report.
- UK birds reach lowest numbers since records began
Figures from major conservation groups show farmland birds and seabirds are hit hardest as nearly half of British bird species decline.
- Hurricane Center says Atlantic system may soak Cabo Verde
Forecasters say a disturbance could bring heavy downpours to the island chain, though strong winds may limit its development.
- Tropical Storm Rachel floods Southern California and Southwest coasts
Flooding and high surf from Tropical Storm Rachel damaged homes and roads, prompting emergency declarations and sandbagging across coastal communities. Rachel's remnants later moved inland.
- Climate change pushes up prices of once-common seafood
Environmental strain is raising the cost of catching and gathering seafood, and once-routine fish and shellfish now cost considerably more.
- Commentators urge Australia to treat energy as security priority
Two AFR pieces argue that energy policy has become a matter of national security. They say coal and gas supplies must be kept while new power sources are developed.
- Global banks pull back on climate pledges, study finds
Several leading lenders are weakening or dropping net-zero goals and related climate policies. Most say climate risks are already priced into markets, while few explain how those risks show up in their accounts.
- Some countries push to delay next UN climate report
The timing has become a point of contention.
- Hurricane Simon's rains kill six in Mexico as storm drifts offshore
Heavy rain and flooding from Simon and a weakened Rachel have hit western Mexico, prompting helicopter rescues, with officials warning Los Cabos and southern Baja California could face watches or warnings within two days.
- Meteorologists find Pacific storms busiest on record, aided by El Niño
Measured by wind speed and storm duration, Pacific storms east of the dateline have become the most active ever recorded, forecasters say.
- Balarabe Abbas Lawal presses states on climate governance
He wants state governments to tie climate priorities to their budgets, while Katsina now ranks top in the 2025 sub-national assessment.
- Rachel's remnants flood California, Nevada and Arizona, forcing closures
Officials in Newport Beach took emergency action as floodwaters hit the Balboa Peninsula, while about 70 runners were rescued from a flooded Utah race route.
- Isaias and Rachel batter both U.S. coasts with rain and waves
Isaias turned deadly after landfall in Gulf Coast states, while Rachel's aftermath brought major waves to the West and rain to the Southwest.
- National Hurricane Center flags new Atlantic disturbance
Forecasters are watching a fresh tropical system in the Atlantic, arriving only days after Isaias struck the Gulf coast.
- Magnitude 7.6 quake strikes Panama, prompting evacuations and tsunami alerts
Warnings reached several neighboring countries.
- New study models how climate disinformation could derail carbon taxes
A new study added misinformation to a climate-economy model, which typically assumes people understand climate damages accurately. The model indicates that such disinformation can cause public support for carbon taxes to collapse.
- Large waves damage California coast homes and boardwalk in Long Beach
Officials have red-tagged eight structures as unsafe, with one more yellow-tagged, after massive surf hit the shoreline.
- Brussels climate march draws tens of thousands ahead of COP31
Police put turnout at 45,000 for the October 11 march, which called for stronger environmental action before the COP31 talks.
- Newport Beach declares local emergency as Tropical Storm Rachel floods city
Flooding from the storm wrecked parts of the Balboa Peninsula, and officials closed beaches and piers as more high tides and surf were expected.
- Tropical Storm Rachel's remnants flood Southern California coast and bring Utah snow
Coastal erosion, flooding and property damage have hit communities from Laguna Beach to Dana Point, and Laguna's council declared a local emergency. Cleanup continues across several areas.
- Hurricane Simon's floods in Mexico leave six dead
Torrential rain and landslides across western Mexico have pushed the death toll to six, with Simon weakening to Category 2 and stalling offshore as Los Cabos went on alert.
- Rachel's remnants flood Southwest, damage California coast and Las Vegas
Storm remnants from Tropical Storm Rachel left homes damaged and streets underwater across Southern California and Nevada over the weekend.
- Supreme Court weighs local government climate suits against energy firms
Justices on Monday examined whether municipalities can pursue state-court claims seeking billions, while some experts cautioned about rising fuel costs.
- Hurricane Simon's rains leave six dead along Mexico's Pacific coast
Flooding and landslides from the storm have killed six people, with ten reported missing and security forces using helicopters to rescue dozens. Forecasters also warn that a new Pacific storm, Trudy, could rapidly become a Category 4 hurricane.
- Study says climate disasters disrupt schooling and healthcare in northern Bangladesh
The findings point to losses beyond money, with access to clean water and communication also hit, and these are often missed.
- Hurricane Isaias strikes Florida and Alabama, bringing flooding and tornadoes
The Category 2 storm came ashore over the weekend, and a falling tree killed a man in Alabama as its remnants passed through.