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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How Humpbacks Hunt With Bubbles

Humpback whales blow bubbles around schools of fish to concentrate them for easier capture. It's called a bubble net, says David Wiley, research coordinator for Stellwagen Bank National Marine Sanctuary, and it's visible as a ring of bubbles at the surface. Now, with underwater digital tracking tags and custom visualization software, whale researchers can see what the whales are doing underwater when they're bubble-netting.

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