Welcome to WatchMojo, and today we’re counting down our picks for the 21st century's biggest scientific leaps forward.

The human story — where we come from and how we evolved — got a new chapter in 2021. Thanks to new fossil finds and analysis of ancient DNA preserved in teeth, bones and cave dirt, scientists have ...

This graphic depicts Perseverance's entry into "Séítah" from both an orbital and subsurface perspective. The lower image is a subsurface "radargram" from the rover's RIMFAX instrument; the red lines ...

Russell Funk had no idea how much his work would strike a nerve. But then came a blizzard of news stories and supportive e-mails from hundreds of scientists — along with a critical backlash. Funk and ...