Evolution is always happening — so why can't we see it? A biologist explains the timescale problem, election pressure, and ...

The skeleton was surrounded by a dark smudge that appeared to be the remnants of a fuzzy body. It was small enough to pop in ...

Every year, bacteria kill more than a million people worldwide through infections that no longer respond to antibiotics. In ...

In 1562, Cardinal Giovanni de Medici, a scion of the dynastic family that dominated politics and banking in Tuscany during ...