Record heat wave in the U.S. raises public health concerns
More than 100 million Americans this week were under some type of warmth advisory, as well as were cautioned to stay inside if possible. From Texas to California, a huge warm front has set record temperatures, increasing issues concerning exactly how hot is also warm. W. Larry Kenney, a teacher of physiology and also kinesiology at Penn State, joins William Brangham for more on how severe temperatures influence the body.
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