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A close look at the compelling colors emitted by K-dwarfs

New research leads to important clues about how the most common planets are formed

An ancient marine murder mystery that remains unsolved

Cracking the code on the origins of a Renaissance work of art

Protective slumber emerged even before brains did in the ocean shallows

Tipping their arrowheads with poison may have tipped the survival odds in their favor

Human caregiving seems to have shaped teens’ thrill-seeking tendencies

Their symptoms are rare and understudied

It’s the most distant supernova recorded to date

Heinrich Schliemann was a thousand years off the mark—but he did still make meaningful discoveries

Aquatic worms sweep up sand in their environments

Understanding their tricks could eventually help preserve people’s eyesight, too