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Anthropology

Belize cave was Maya child sacrifice site

Bones in Central American cave suggest many Maya sacrificial victims were children.

Humans

Pieces of Homo naledi story continue to puzzle

Researchers defend Homo naledi as a new hominid species and debate how it reached an underground cave.

Cosmology

New sky map charts previously unknown gamma-ray sources

A new map of the sky from the High-Altitude Water Cherenkov Observatory charts the cosmic origins of high-energy photons.

Planetary Science

How alien can a planet be and still support life?

Geoscientists imagine the unearthly mechanisms that could keep alien planets habitable.