Sound a little dramatic? Well, according to University of Washington Professor of Astrobiology, Peter Ward, (speaking on NPR's Science Friday) "One of the things that's really scaring us to death is, we look at past mass-extinctions and everyone says [asteroid] 'impact'… and NASA and the public believe this is the major threat, and yet we've now found that four of the past five mass extinctions were caused by microbes." So what? "Turns out that global warming is the scariest thing that can happen to a planet because the bad microbes come back."
"I think we're really on the cusp of planetary disaster that's unprecedented for the last 60 million years," says Ward.
Sorry to be such a downer. But we're kind of already there. Last year, the London Times reported, "man is responsible for the greatest extinction of wildlife since the demise of the dinosaurs."
Check this stuff out, too…
- Most major mass-extinctions on Earth have occurred