Daily Science Webcasts

Corn - Monoculture

Fewer varieties of corn threatens the heritage of a Mesoamerican culture.
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-- May 23, 2013

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Science Diary Bears - Melatonin

Melatonin regulates the sleep-wake cycle for humans and other animals. Strangely, bears who are masters of hibernation, seem to produce very little melatonin.
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-- May 22, 2013

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Science Diary: Bears - Overview

What biological mechanisms tell a bear when it's time to hunker down for the winter and awaken in the spring?
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-- May 21, 2013

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Will We Colonize Mars?

The Apollo astronauts reported seeing strange flashes of light, a clue that high levels of radiation could effect futue space flight and colonies.
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-- May 20, 2013

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Caves - Diving

Scientists investigating underwater caves must brave dangerous conditions.
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-- May 17, 2013

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Each weekday, Pulse of the Planet provides its listeners with a two-minute sound portrait of Planet Earth, tracking the rhythms of nature, culture and science worldwide and blending interviews and extraordinary natural sound. Get more info.

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