Climate Change

Southern California was hit by the season’s first Santa Ana wind event on October 16-17, with gusts near 100 km/h fanning multiple simultaneous wildfires; the roughly 465-acre Norte Fire has burned homes in San Clemente and San Juan Capistrano, while a separate Malibu-area blaze has forced large-scale evacuations of coastal communities. Mandatory evacuation orders have been issued across parts of Los Angeles County and Orange County, and fire crews are battling the blaze under extremely dry and windy conditions, an episode that highlights how climate change is pushing California’s wildfire season earlier and making individual fires far more intense.

Nepal was hit on October 12 by another wave of severe floods triggered by heavy rainfall, sweeping away homes and bridges and cutting off mountain villages. The disaster exposed deep structural weaknesses in post-disaster recovery capacity.

A well-known natural sea arch along Hawaii’s coastline collapsed into the Pacific Ocean this week without warning, ending a roughly 550-year run as both a geological landmark and a tourist draw. The arch had been carved from volcanic rock by centuries of wave and salt weathering, and its loss has renewed discussion among researchers and the public about how fast coastal landforms evolve, whether sea-level rise is accelerating erosion, and how complete the human record of such long geological processes can ever be.

According to the BBC, The Washington Post, Reuters and other international media, Swiss glaciers suffered another record-breaking year of ice loss in 2026, with annual volume reductions exceeding 5%, the steepest retreat recorded in recent years. Scientists warn that heatwaves combined with insufficient winter snowfall are accelerating glacial melt, posing systemic challenges to European water security and hydropower.

NBC News reports that US Supreme Court Justice Samuel Alito has recused himself from a major climate case, a reversal that comes after complaints about his financial interests in oil and gas holdings in the area at issue. The decision marks an important reversal of position for Alito and brings judicial ethics back to the center of public debate. It will also have a meaningful impact on the case’s proceedings and on the Supreme Court’s posture on climate regulation.

According to The Washington Post, multiple Florida counties — including Hillsborough, Pasco, and Pinellas — have declared states of emergency in response to a wildly unusual dengue outbreak. Local health departments are accelerating mosquito-control operations and community health education.

The BBC reported on September 16 that the latest satellite data shows the Earth has lost more than 12 trillion tons of ice from Greenland and Antarctica over the past 47 years, a staggering figure highlighting the profound impact of climate change on polar ice sheets. Scientists warn that at current melt rates, global sea levels could rise several meters by the end of the century, threatening the survival of coastal cities and island nations.

US media reported on September 14 that the Environmental Protection Agency has formally repealed its greenhouse gas emission limits for power plants, prompting immediate sharp reactions at the federal and state levels, from industry groups and from the business community. The rule had been regarded as one of the most substantive climate-policy levers in the US power sector, and its repeal means that, for several years to come, the US electricity industry will no longer face mandatory federal emission constraints, leaving state governments, grid operators and companies to make investment and operating decisions in a highly fragmented policy environment.

The European climate agency Copernicus Climate Change Service officially confirmed that August 2026 was the hottest month globally since temperature records began, with global average temperatures significantly exceeding pre-industrial levels, marking a further acceleration of global warming with profound implications for global ecosystems, agriculture, and public health.

The World Meteorological Organization warns that a strong El Nino event will form in the coming months, potentially causing extreme weather worldwide with major impacts on agriculture, water resources, and public health.