Friday, November 16, 2012

Instant Egghead - Are We Facing the Sixth Mass Extinction?

According to the United Nations, we are losing about 200 species per day—a thousand times the normal background rate of extinction. How does this stack up to previous mass extinctions? Scientific American editor Fred Guterl explains.

by Scientific American.

ᔥ Source: youtube.com

Posted at 10:00 AM http://tmblr.co/ZyRnuxXOMxPV
and246 notes Tags: science biology ecology Environment Instant Egghead

Notes

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