


“It tends to affect millions of people at a time, and a lot of people don’t realize the danger.”īut heat is the deadliest weather phenomenon in a typical year in the United States, killing an average of 148 people annually in the 30 years from 1992 to 2021, and climate change is only going to make heat waves more common. “Heat is an interesting hazard because it can kind of creep up on you,” said Jennifer Marlon, a research scientist at the Yale Program on Climate Change Communication. That makes heat waves easy to dismiss as quirky summer weather. We feel it on our skin, radiating from the sun or bouncing off asphalt and concrete, but we don’t see it the way we see, say, floodwaters carrying cars down the street. Heat, on the other hand, is invisible and insidious. They bring a visible, elemental fury that’s hard to ignore. Natural disasters like hurricanes and wildfires are (rightly) accompanied by warnings of their danger.
