Heat: The Human Limit (Episode 134 · Part 1 of 4)

Heat: The Human Limit (Episode 134 · Part 1 of 4) Heat isn't just one item on the list of things going wrong with the climate — it's the engine under all of them, the force that drives the droughts, the fires, the storms, and the floods alike. This first episode begins where the heat begins: inside your own body. We go looking for the limit written into human flesh — the "wet-bulb" line past which sweat can no longer cool you — and find that the true threshold sits far lower than science long...