Mark Matney

Oct. 21, 2011

Predicting When Space Junk Will Come Home To Earth

This weekend, another satellite is scheduled to crash to Earth, just a month after the last one.

space spacecraft satellite reentry crash

Feb. 20, 2009

Space Debris

Last week, two satellites collided in orbit around Earth. We'll check in on the after-effects of that collision, and talk about what the lingering debris from the crash means for future space missions.

space debris, space junk, collision, crash, satellite, spaceflight

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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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