The psychedelic earth tiger, a dazzling rainbow tarantula from India, now faces extinction due to the illegal pet trade.

The research maps biofluorescence across 459 glowing fish species and shows just how varied the colors have become.

In 1921, Otto Loewi woke from a dream with the idea for an experiment that proved nerves communicate using chemicals, not just electricity. By showing that stimulating one frog’s heart released a ...

A Texas biotech company is trying to bring mammoths and other extinct creatures back to life. The science is as intriguing as ...