The Sixth Mass Extinction Has Begun and It's All Your Fault

Researchers at Cal Berkeley say that we—we being humans—have probably triggered the sixth mass extinction in our planet's history (the first man-made mass extinction!). Thanks to the last 500 years of over-fishing, overhunting, habitation destruction, and fossil-fuel-induced global warming, we could have the blood of… » 3/04/11 5:40pm 3/04/11 5:40pm