Here’s how much climate change increases the odds of brutally hot summers
Simulations show warming is making the deadly heat gripping the Northern Hemisphere more likely
![A photo of a man facing away from the camera and pouring water out of a 2-liter jug onto his head.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/07/072423_NO_heat-wave_feat.jpg?fit=1030%2C580&ssl=1)
Millions of people across the Northern Hemisphere are sweltering in extreme heat waves, including this man trying to stay cool in Phoenix earlier this month.
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