Three marine scientists describe what they saw in the summer of 2023, when more than 95% of elkhorn and staghorn coral bleached and died in Florida’s coral reef.

LAS VEGAS — Intense heat will blanket much of the West this week, with temperatures in some states expected to soar to record-breaking highs, elevating the risk of dangerous wildfires and heat-related ...

An intense heat wave gripped a large portion of the country during the last full week of June. Records fell as dangerous levels of heat and humidity swept as far north as New England. The United ...

A dangerous heat wave is building across Wisconsin and the Great Lakes this week, with temperatures climbing into the upper 80s and 90s — 20–25 degrees above normal. Much of the state normally expects ...

A “dangerous” late-season heat wave is expected to return to Washington — not because temperatures will soar to record-breaking extremes, but because they will run far hotter than what the region is ...

The season’s most dangerous heat wave so far is expected to hit Southern California this week. Extreme heat and fire weather advisories have been issued beginning Wednesday, set to last for several ...