The world has gotten a lot smaller over the past century, but the store of knowledge has become unfathomably large. One way to think about it: Last week, I was able to fly across the country in five ...

Physicists know about the huge chasm between quantum physics and the theory of gravity. However, in recent decades, theoretical physics has provided some plausible conjecture to bridge this gap and to ...

One hundred and ninety-nine years after Charles Darwin was born, and 149 years after he published On the Origin of Species, some scientists say that the theory of evolution is due for a revision. Not ...