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Neuroscience

Football and hockey players aren’t doomed to suffer brain damage

A comprehensive look at the brains and behavior of retired professional football players and retired hockey players finds no signs of early dementia.

Astronomy

Astronomers saw the first mass eruption from a star that’s not the sun

The first coronal mass ejection observed fleeing another star was as massive as scientists expected, but carried less energy.

Animals

This killifish can go from egg to sex in two weeks

The fastest known maturing vertebrate in the lab is even faster in the wild.

Astronomy

Hopes dim that gamma rays can reveal dark matter

A mysterious glow of gamma rays coming from the center of the Milky Way probably isn’t a sign of dark matter.