Jane McLaren Walsh

May. 23, 2008

What's a Crystal Skull, Anyway?

This week, the latest entry in the Indiana Jones movie franchise makes its debut. In this segment, Ira talks with a real life archaeologist about just what a 'crystal skull' really is, and whether there's any real mystery about them.

archaeologist, archaeology

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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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