In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

This documentary examines a rare predatory dinosaur whose oversized claws shocked paleontologists when they were first ...