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 — ...

This story was published on June 19, 2025, and has been updated. The first significant heat wave of the summer is hitting much of the United States this week. From the Midwest to the East Coast, ...

It's not the heat that gets you — it's the humidity. Millions will feel that firsthand over the coming days as a heat dome is expected to bring extreme heat and humidity for much of the U.S. Those ...