Biology

A new species leaves little to the imagination

A person’s biological sex seems simple but is deceptively complex. It appears to be binary: An XX chromosomal pair is female, and an XY chromosomal pair is male. Doctors look at a newborn’s genitalia, pronounce...

The doodle represents the "little animals" Leeuwenhoek discovered that later became known as bacteria

A new model suggests a world very different from the one we know today

A new study gives the crown to a very fierce fish

The sea gives up a long-held secret, thanks to exhaustive DNA sleuthing