It seems obvious that time runs in one direction- people don't grow younger and an egg can't be unscrambled, for example. But why is this so? In his book "From Eternity to Here," physicist Sean ...

But despite its extraordinary popularity among some of the smartest people on the planet, string theory hasn’t been embraced by everyone–and now, nearly 30 years after it made its initial splash, some ...

A fringe new theory suggests that time is the fundamental structure of the physical universe, and space is merely a byproduct. According to Gunther Kletetschka, a geologist — not a physicist, you’ll ...