Tawny crazy ants are invading ecosystems and homes in states including Texas and Florida, wiping out other ant species and overwhelming homeowners. Weekend Edition Saturday host Scott Simon talks to Texas A&M research scientist Robert Puckett, who says the ants are "ecological steamrollers" that reproduce so fast they are nearly impossible to get rid of.
Actor Bruce Willis appears on the surface of an asteroid in a scene from the movie <em>Armageddon</em>.
Credit Frank Masi / AP
It won't be quite like Bruce Willis in Armageddon, but maybe you'll feel just as much a hero.
The White House and NASA are seeking the public's help in hunting for asteroids that could someday smash into Earth. They're also looking for a perfect space rock to capture so that astronauts could go there and study it.