Why extreme heat is more dangerous than many realize

Tens of millions of people living in the Southwest are dealing with what the National Weather Service says it's one of the longest heat waves in modern record. That extreme heat is even more dangerous than some might realize. Geoff Bennett discussed that with Jeff Goodell, a climate journalist and author of "The Heat Will Kill You First: Life and Death on a Scorched Planet." Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: TikTok:   / pbsnews   Twitter:   / newshour   Instagram:   / newshour   Facebook: http://www.pbs.org/newshour Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe