Why Extreme Heat Is So Deadly

From Gaza to India to the Philippines, climate change exacerbated often record-breaking extreme heat over the past month

Ancient tree rings show that the summer of 2023 was the hottest in the past 2,000 years because of human-caused climate change

New CDC guidance encourages clinicians to start conversations with patients about dangerous heat

The planet just saw the hottest span of 12 months in human history because of climate change driven by the burning of fossil fuels

The number of fatal heart attacks, strokes and arrhythmias could triple for older and Black adults as extreme heat increases with global warming

A heat dome that baked parts of South America in late September was made much more likely and at least 1.4 degrees Celsius (2.5 degrees Fahrenheit) hotter by climate change

With three degrees Celsius of warming, U.S. deaths during extreme temperatures could reach 63,000 a year, researchers calculate

Nearly every person on the planet saw high temperatures that were made at least twice as likely by climate change this summer

Extreme heat is becoming more common across the U.S. The federal government and employers owe workers better safety measures

August and September will bring tens of millions of public school students back to class. Many face health risks from rising temperatures

Soaring temperatures fueled by climate change are contributing to buckling highways, ruptured tires and impaired visibility from wildfire smoke

Extreme temperatures across the U.S. have put the elderly, outdoors workers and people with no access to cool air at the greatest risk of severe heat-related illnesses or even death