Molecular evidence from a 2-million-year-old southern African hominid species indicates sex and genetic differences in P. robustus.

The Trump administration is cutting $1 billion in grants that support student mental health. That has educators worried.

A new genetic study could help saolas survive by enabling better searches through environmental DNA. But some experts fear they may be extinct already.

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

The personalized CRISPR treatment could be the future of gene therapy, but hurdles remain before everyone has access.

New studies show that astrocytes, long thought to be support cells in the brain, are crucial intermediaries for relaying messages to neurons.

Ancient scavengers of the beached beasts turned their bones into implements that spread across a large area, researchers say.

Common bedbugs experienced a dramatic jump in population size about 13,000 years ago, around the time humans congregated in the first cities.

A 47-million-year-old cicada fossil from Germany’s Messel Pit could teach us about the evolution of insect communication.

A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.

A new antivenom relies on antibodies from the blood of Tim Friede, who immunized himself against snakebites by injecting increasing doses of venom into his body.

Editor in Chief Nancy Shute discusses the centennial of quantum mechanics’ framework, Hubble’s 35th anniversary and the legacy of Kanzi the bonobo.