In this new video from Big Think, astrophysicist Neil deGrasse Tyson says he's almost embarrassed for our species that it takes a warning shot across our bow before legislators take seriously the warning they've been getting from astronomers that its a matter of when not if Earth will get smacked by an asteroid.

"But it took an actual meteor over Russia exploding with 25 times the power of the atom bomb in Hiroshima to convince people that maybe we should start doing something about it."