Mary Fran Hazinski

Apr. 04, 2008

Hands-Only CPR

The American Heart Association releases new guidelines for 'hands-only CPR,' a simpler first aid technique that the group says can be quite effective as a life-saving tool.

cpr, first aid, heart

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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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