The 4th of July was the hottest day yet—not just of the summer but of recorded human history. Between waves of Canadian wildfire smoke, malaria reappearing in the United States, and deaths from heat, this might be the year that we’re forced to reckon with what life will be like on our newly hotter planet.

Guest: Jeff Goodell, contributing writer at Rolling Stone and the author of the upcoming book The Heat Will Kill You First: Life and Death on a Scorched Planet.

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