Our universe might be really, really big — but finite. Or it might be infinitely big. Both cases, says physicist Brian Greene, are possibilities, but if the latter is true, so is another posit: There ...

"There was a time when ‘universe' meant ‘all there is,' " writes Greene, but soon we may have to redefine that word, along with our own meager understanding of the cosmos. A theoretical physicist and ...

From recent theories developed to explain the behavior of subatomic particles and the dark recesses of space come the “multiverse” theory that proposes not one but an infinite number of universes. One ...

The Leonard Lopate Show, hosted by Leonard Lopate for over three decades, featured conversations that New Yorkers turned to each afternoon for insight into a wide variety of topics; including ...

Is it preposterous to consider the existence of parallel universes? Or is it preposterous not to? Physicist Brian Greene would tend toward the latter view. The Columbia University theoretical ...

BOSTON (CBS) - Could there be such a thing as a parallel universe? Dan's guest, Brian Greene, he "Einstein Of The 21st Century," says yes and he can convince you. Originally broadcast March 2nd, 2011.