Dangerous Heat Predicted to Hit 3 Times More Often in Future

What’s considered officially “dangerous heat” in coming decades will probably hit much of the world at least three times more often as climate change worsens, according to a new study.

In much of Earth’s wealthy mid-latitudes, spiking temperatures and humidity that feel like 103 degrees or higher — now an occasional summer shock — statistically should happen 20 to 50 times a year by mid-century, said a study Monday in the journal Nature Climate Change.