Despite the widespread belief that natural is better when it comes to sex, pregnancy, and parenting, most of us have no idea what “natural” really means; the origins of our reproductive lives remain a mystery. Why are a quarter of a billion...
A celebrated astronomer makes a powerful case for the harmony between two of physics’ most important and seemingly contradictory theories
The twentieth century gave us two great theories of physics. The general theory of relativity describes the...
An exploration of mankind's fascination with worlds beyond our own-by the bestselling author of The Physics of Star Trek
Lawrence Krauss -an international leader in physics and cosmology-examines our long and ardent romance with parallel universes,...