The Most Impactful Event in Earth's History

The Chicxulub asteroid hit the earth in the Yucatan subcontinent 66 million years ago and changed everything. The impact itself was devastating for a large part of the earth, but the aftereffects changed the entire earth. It even changed the global climate! And that's why we have no dinosaurs today, unless you count the birds that somehow survived. We've never had an event as powerful or as destructive as the Chicxulub impact before or after. Could it happen again? Yes, but the chances are pretty small. I hope that makes you feel better about it because we've got plenty of other things to worry about. (via Geeks Are Sexy)