Key Takeaways Kissing may date back 21.5 million years in early ape ancestorsResearchers studied modern primates to estimate ...

Scientific information on the US Centers for Disease Control and Prevention’s website was replaced on Wednesday with anti-vaccine talking points that don’t rule out a link between vaccines and autism, ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

The terms “gender ideology” and “transgender ideology,” have become ubiquitous — in government documents and policy announcements, in mass media and in online disputes.

The latest trio — Zhang Lu, Wu Fei and Zhang Hongzhang — are the crew of the Shenzhou-21 mission, whose return capsule was ...

While none of the spacecraft have cameras perfectly designed to spot comets zipping by at speeds up to about 153,000 miles per hour (246,000 kilometers per hour), astronomers didn’t want to miss what ...

The new study involved taking a fresh look at the "Altamura Man," which is an exceptionally well-preserved Neanderthal ...

The longstanding public health practice of adding fluoride to community drinking water is facing heavy scrutiny in the United States over questions about whether the benefits outweigh the potential ...

Researchers have discovered chemical traces of life in rocks older than 3.3 billion years, offering a rare look at Earth’s ...

Archaeologists studied Semiyarka, dubbed The City of Seven Ravines, a settlement from 1600 BC that may have been a powerhouse ...

Deep in the heart of the matter, some numbers don't add up. For example, while protons and neutrons are made of quarks, ...

Heimlich writes that since he first described the technique he has heard of 162 people whose lives were saved.” “What has ...