What's six miles wide and can end civilization in an instant? An asteroid -- and there are lots of them out there. With humor and great visuals, Phil Plait shows us all the ways asteroids can kill us (yipes), and what we must do to avoid them.

Phil Plait was on a Hubble Space Telescope team of astronomers who thought they may have captured the first direct photo of an exoplanet ever taken. But did the evidence actually support that? Follow along as Plait shows how science progresses -- through a robust amount of making and correcting errors. "The price of doing science is admitting wh...

Science is our best tool to learn objective truth. But to do so, scientists must not be afraid to fail. How does a debunked discovery prove the value, and intrigue, of science? Join TED speaker and renowned blogger Phil Plait for answers.