From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The world’s largest reptiles lurk in murky swamps, rivers, and lakes, waiting to ambush unsuspecting prey in the blink of an eye. Life one second, death the next. In the case of crocodiles, this sad ...

We were overwhelmed by the response to our annual Letters to Santa feature, with more than 1,250 letters submitted this year. Due ...