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 Thanksgiving!

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Mystery Box

Meet The Balloonatics

\tIt's crunch time for the 'balloonatics' at Macy's Parade Studio. The balloons themselves, which are designed and fabricated in a warehouse in New Jersey, are getting their final checkup before the Macy's Thanksgiving Day Parade. John Piper and Jim Artle take us around the studio and spill the secrets of inflation, explain how to calculate whether your balloon will float, and explain why the balloons look better after a little time in the sun.

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