The job of physicists is to worry about numbers, but one number has perplexed physicists for more than a century. That number is 0.00729735256—approximately...

Since its launch 32 years ago, the Hubble Space Telescope (HST) has taken incredible pictures of the universe. Recently, with the aid of a phenomenon...

In 2002, Professor Michel Brunet of the University of Poitiers, France, described a tiny fossil ape skull nicknamed Toumaï as an upright-walking human...