After evolving from horses some two million years ago, zebras earned their stripes. But why? A team of scientists has found part of the answer.
There really was a giant, flightless bird - Gastornis - with a head the size of a horse's wandering the high Arctic some 53 million years ago.
A statement made by Neil deGrasse Tyson, released after NASA debuted a new image of Earth on the 46th anniversary of the 1969 moon walk.
There is no longer any doubt: We are entering a mass extinction that threatens humanity's existence.
A definitive geological timeline shows that a series of massive volcanic explosions 66 million years ago contributed to the extinction of the dinosaurs.
Could smog and polluted air be one of the triggers for autism spectrum disorders?
Pizza boxes have the recycling symbols on them, but many areas say you can’t put them out with the rest of the recyclable cardboard.
Children with autism spectrum disorder (ASD) were more likely to have been exposed to higher levels of certain air toxics during their moms' pregnancy.
Were Albert Einstein and Leonardo da Vinci born brilliant - or did they acquire their intelligence because they knew to try harder?
While you should follow disposal instructions on the labeling or information that accompanies the medicine, here's how to dispose of unused medicines.