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

Scientific information on the US Centers for Disease Control and Prevention’s website was replaced Wednesday with ...

Scientists newly described how a parasitic ant queen infiltrates another ant species’ colony and tricks the workers into killing their mother.

A scientist in Japan has developed a technique that uses brain scans and artificial intelligence to turn a person’s mental images into descriptive sentences.

Kissing is more than just “mouth-to-mouth” touching, and the study doesn’t really shed much light on why humans kiss the way they do, said Adriano Reis e Lameira, an evolutionary psychologist and ...

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 ...

A 62-page document written by billionaire Jared Isaacman outlines a sweeping, ambitious, and at times controversial plan for the space agency.

Analysis of Adolf Hitler’s DNA reveals he may have had a rare genetic disorder that delays puberty, a new documentary says. Experts say that more details are needed.

Increased solar activity causes auroras that dance around Earth’s poles, known as the northern lights, or aurora borealis, ...

Researchers have newly described three extremely rare species of toad that leapfrog over the egg-to-tadpole stage and give birth to toadlets.

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

Scientists say they have found a way to test ancient human remains for hormones linked with pregnancy, a breakthrough that may allow archaeologists to determine whether a woman was pregnant or had ...