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

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.

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

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