A giant asteroid crash caused an ancient ice age on Earth, but also gave life a boost
By Ashley Strickland
NASA Emails Show How A “Sneaky” Asteroid Escaped Detection
By Dan Vergano & Jason Leopold
How we discovered that an asteroid collision in space 466m years ago boosted life on Earth
By Birger Schmitz
No, asteroid 2007 FT3 won't hit Earth in October | Space
By Eddie Irizarry