Hawaii’s governor has asked the White House for a presidential major disaster declaration, after heavy rains and floodwaters forced thousands of people to evacuate their homes on the North Shore of Oahu. It’s the worst flooding Hawaii has seen in more than 20 years.

In North America, a rapid analysis of this month’s early spring heat wave by World Weather Attribution has found record-shattering, triple-digit March temperatures across the southwestern U.S. would have been virtually impossible if not for climate change.

On Monday, the United Nations warned in a new report that concentrations of greenhouse gases have reached all-time highs, with the climate “more out of balance than at any time in observed history.” Ko Barrett of the World Meteorological Organization said the report confirms 2025 was at least the third-hottest year on record.

Ko Barrett: “It was about 1.43 degrees C above the 1850-to-1900 baseline. Between 2015 and 2025, we experienced the hottest 11 years on record. In 2025, our glaciers continued to retreat, and ice continued to melt. The warming ocean and melting land-based ice are driving the long-term rise in global mean sea level rise.”