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What Gives Hot Peppers Their Heat?
When you eat peppers, the chemical capsaicin fits into the heat pain receptors in your mouth, sending a false signal that’s identical to the one your brain would receive if you ate something literally burning hot.
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54:10
Scientists hunt for a mega-eruption that plunged medieval Earth into a deep freeze.
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52:55
Engineers race to build a massive dome to contain the crumbling remains of the reactor.
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53:09
Join pioneering shipbuilders as they embark on a feat of maritime engineering.
1:53:34
How can the science of learning help us rethink the future of education for all children?
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53:49
Discover how Allied forces conspired to destroy one of Hitler’s most diabolical weapons.
53:32
Watch as Otzi, a 5000-year-old mummy, is brought to life and preserved with 3D modeling.
53:07
Retrace the thought experiments that inspired his theory on the nature of reality.
53:35
How did massive volcanic eruptions, inland seas, and land bridges pave the way for life?
53:35
Experience the colossal geologic forces that shaped our continent over 3 billion years.
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52:52
Can scientists unravel the mysterious phenomena that lurk between Earth and space?
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53:10
Which technologies worked in the race to track down the men behind the marathon attack?
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52:53
Can science help us understand why some people commit horrific acts of mass murder?