Tantalising signs of past microbial life showed up on Mars this year, but to truly know whether they contain the answer to ...

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

Pinacosaurus roamed harsh Cretaceous deserts protected by a shell of heavy armor. Its body was covered in thick plates that acted as a natural shield against predators. Fossils show a creature adapted ...