Morning Overview on MSN

What physics really says about time travel possibilities

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...
NPR

What does it take to get time travel right in movies?

This month marks 40 years since Michael J. Fox, as Marty McFly, jumped into a souped-up DeLorean and went back in time, putting his very future existence at risk. (SOUNDBITE OF FILM, "BACK TO THE ...