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Fifteen years after the discovery of a new type of human, the Denisovan, scientists discovered its DNA in a fossilized skull. The key? Tooth plaque.

Researchers found children with highly addictive use of phones, video games or social media were two to three times as likely to have thoughts of suicide or to harm themselves.

A new study suggests that these Australian insects may be the first invertebrates to use the night sky as a compass during migration.

About 70,000 years ago in Africa, humans expanded into more extreme environments, a new study finds, setting the stage for our global migration.

Dr. Fiona Havers is influential among researchers who study immunizations. The wholesale dismissal of the agency's scientific advisers crossed the line, she said.

The company, xAI, has installed several dozen turbines in Memphis without proper permits, the group said, polluting a nearby community.

Scientists discovered that octopuses use their limbs to sample the microbiomes on the surfaces they touch.

Four experts were sued for defamation ahead of a seminar where they planned to talk about research into the potential health risks on playgrounds and sports fields nationwide.

A new book shows that the Northern Dene people of Alaska and Canada have known far more about the stars than an earlier generation of scientists were willing to acknowledge.

The budget cuts threaten global progress on everything from heart disease to H.I.V. -- and could affect American drug companies, too.