Michigan boy finds 'dragon's tooth' that belonged to a mastodon

The most common Alzheimer’s risk gene may also protect against memory loss

Top U.S. science funder says it is swamped by investigations of foreign influence on grantees

Perseverance’s initial images are the first ground-based evidence that Mars may have once housed a delta branching out into a lake in Jezero Crater. This study informs where Perseverance will now go sample rock, looking for signs of ancient life.