John Kessler

Nov. 30, 2007

Stem Cells in Review

Last week researchers announced a significant advance in stem cell science, changing skin cells into cells that seem to behave like embryonic stem cells. Now that the dust has settled, we'll talk about the research and where the field goes from here.

stem cells, ethics, medicine, biotechnology

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Michael Pollan Talks Plants and Food

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Happy National Moth Week!

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Mystery Box

The Myth of the Woolly Bear

\tLegend holds that the length of a woolly bear caterpillar’s color bands can be used to forecast how severe the winter weather will be. The myth dates back to colonial American folklore but was popularized by a 1948 study. SciFri finds out if there’s any truth to the lore, and what the caterpillar’s fuzzy bristles are really used for.

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