What is the heat index?

This all-American condiment got its start as a fermented fish sauce and featured in the formation of the Food and Drug Administration. Learn about the history of tomato ketchup -- and why it's so hard to get out of bottles -- in today's episode of BrainStuff, based on this articl ...  Show more

We all know we're supposed to reach out to friends and family experiencing depression, but it's an intimidating prospect. Learn how to get a conversation started in this classic episode of BrainStuff, based on this article: https://health.howstuffworks.com/mental-health/depressio ...  Show more

There's a heat wave hitting much of the United State this week. Our bodies do have natural ways to dissipate heat, but when temperatures get extreme, sometimes they just can't keep up. In this episode of Life Kit, learn how to keep cool, hydrated and safe in extreme heat.See pcm. ...  Show more

The summer's first major heat wave has arrived. Our bodies do have natural ways to dissipate heat, but when temperatures get extreme, sometimes they just can't keep up. In this episode of Life Kit, learn how to keep cool, hydrated and safe in extreme heat. See pcm.adswizz.com for ...  Show more

Record-breaking temperatures resulting from climate change are occurring more often, lasting longer, and are more intense than ever before. This is a problem that affects us all, putting our lives at risk. On today’s episode, CNN Chief Medical Correspondent Dr. Sanjay Gupta speak ...  Show more

This has been the hottest summer on record for nearly 100 US cities. Extreme heat isn't just uncomfortable, it can also cause a lot of harm -- even death. Dr. Sanjay Gupta talks to Dr. Gaurab Basu, a Harvard assistant professor and climate change expert about the very real effect ...  Show more