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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.

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

Researchers exploring the origins of left-right dominance in the brain found no innately better motor skills on either side.

Two "superpuff" planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as cotton candy.

New Horizons data reveal Pluto's first six confirmed landslides along steep crater rims.

Proposed federal rules would rely on political appointees to decide how a lot of U.S. science gets done. History shows the consequences of such actions.

In her new book, science journalist Roberta Kwok takes readers behind the scenes to understand how researchers get nature to give up its secrets.

A boost to heat production and drawing in more oxygen may help Andean leaf-eared mice thrive at altitude.

The HER Salt Lake Contraceptive Initiative's approach, which centered the user and made refills easy, meant all types of methods worked well.