In sci-fi, AI can navigate the unknowns and — ideally — keep human travelers safe. But it’s not intelligent enough to do that yet.

Clinical trial results show an experimental drug lowered tau levels in the brain and slowed some memory loss, but the data came with a surprise twist.

The Euclid space telescope discovery could help researchers understand how black holes grew so massive so quickly in the early universe.

Atmospheric rivers bring heavy rain and floods, but if they don’t come around, it could mean drought. A new global map reveals little-known pathways.

The brine-formed meteorite that crashed into a New Jersey roof in 2024 could teach us about how life first arrived on Earth.