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Unique Adaptations may Explain Bats' Resistance to Viruses
The heartbeats of some species of flying bat can reach 1,066 beats per minute. Could this level of activity — unrivaled by any other mammal — help explain bat super immunity?
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53:47
See how Earth transformed from a barren hellscape to a planet capable of sustaining life.
53:31
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
53:16
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.
53:30
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate
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53:17
Intrepid paleontologists discover that dinosaurs thrived in the Arctic’s cold and dark.
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53:28
Take a tasty look at insect foods that could benefit our health and our warming planet.