THC in marijuana may help eggs become ready for fertilization. But this may come at the cost of more eggs with wrong numbers of chromosomes.

NASA’s InSight lander listened to Marsquakes for four years. The tremors revealed that Mars may have a solid inner core.

GLP-1 medications like Ozempic, Wegovy and Mounjaro might lower people’s risk of developing certain cancers, especially ones linked to obesity.

Despite philosophical debates, colors like red may spark similar brain activity across individuals, new research suggests.

The subatomic particles called neutrinos are famously elusive. But an unconventional trick could make a laser beam of the aloof particles.

From salamanders to monkeys, many species get more violent at warmer temperatures — a trend that may shape their social structures as the world warms.

Sporting the world’s largest digital camera, the new telescope is poised to help solve some of the universe’s biggest mysteries.

On Mars, the Perseverance rover found a spotted rock that could bear signs of ancient life. On Earth, a researcher used a lookalike for a dry run.

European artisans turned a Tang Dynasty tomb guardian sculpture into a symbol of medieval Venetian statehood, researchers say.

Rodents may have a rule of thumbnails. Many rodents have curved claws that help the animals climb or dig. But most also have flat nails on their thumbs, researchers report in the Sept. 4 Science. This ...

In a first, astronomers imaged a baby planet within a gap in the disk of material around a star, confirming predictions about how rings form.

A new analysis suggests that recent extinctions have been rare, limited mostly to islands and slowing. But others argue this is all just semantics.