Why Extreme Heat Is So Deadly

The year 2024 could easily shape up to be the hottest ever measured, climate scientists say

By vastly understating the number of heat-related deaths, medical officials make it harder to improve heat safety and save lives

A heat wave is sending temperatures soaring in the Midwest, and “corn sweat” is pushing humidity sky-high

Air-conditioning is uncommon for incarcerated people, and the heat index inside many of Texas’s 100 prison buildings can exceed 110 degrees Fahrenheit

Internal records show the U.S. Postal Service has tried to get workers out of air-conditioned offices. The allegations come one year after the agency was accused of falsifying heat-training records

When heat hits, we talk about the heat index, the dew point and heat risk. But what do all these measures mean?

Hundreds of thousands of people die from extreme temperatures every year, more than any other type of weather disaster

A 1972 law that allows states to avoid OSHA regulations for public-sector employees is undermining the nation’s first proposed worker safeguards for heat

An athletic trainer explains why bodies need time to acclimatize to extreme heat and what risks to watch out for to avoid heat illness in student athletes

Temperatures in Fairbanks, Alaska, are predicted to reach a record-tying 90 degrees Fahrenheit because of a prolonged, unusually late heat wave

Miami and New York City officials say they need more insight into how searing temperatures affect homeless people and other vulnerable populations

Extreme heat can cause train tracks to expand and buckle. That’s forcing rail operators to adapt as the climate warms