Climate change has been exacerbating heat waves, and the problem isn't going away anytime soon. An increasingly hot planet — due largely to burning fossil fuels such as coal, oil and natural gas — ...

Millions of people in the U.S. are trying to stay cool as the summer's first major heat wave continues to create dangerous conditions across the Midwest and along the East Coast. That heat is expected ...

The first big heat wave of 2025 has arrived, coinciding with the official start of summer. More than 40 million people in the U.S. were under heat alerts Friday, according to the National Weather ...