Karla Kerlikowske

Nov. 20, 2009

New Mammography Guidelines

New guidelines published this week by a government advisory panel suggest that women delay the start of routine mammograms until they're 50 years old.

mammography, breast cancer, mammogram

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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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