Did Microbes Cause The Earth's Most Devastating Mass Extinction?

A little over 250 million years ago, our planet experienced a mass extinction the likes of which have never been seen before or since. About 90% of all species were suddenly wiped out. And new study suggests it wasn't caused by an asteroid or super-volcano — but rather methane-spewing microbes. » 3/31/14 12:00pm 3/31/14 12:00pm

How massive volcanoes and supercharged greenhouse gases almost wiped…

About 250 million years ago, the world suffered through an extinction event that makes the death of the dinosaurs look like a minor hiccup by comparison. And now we have our best understanding yet of what caused the Great Dying. » 1/23/11 1:15pm 1/23/11 1:15pm