New work pinpoints the origins of the planet Theia, whose ancient collision with Earth likely produced the moon

The CDC this week quietly changed its official language to suggest vaccines may cause autism, a claim that scientists say has no basis in evidence

The moss Physcomitrium patens joins tardigrades and thale-cress as a species that has survived in space

After her shocking lung cancer diagnosis, the late Susan Wojcicki dedicated herself to fighting the disease and looking for answers

A machine-learning breakthrough could lift the veil on Earth’s early history—and supercharge the search for alien life

As AI systems exceed one benchmark after another, our standards for “humanlike intelligence” keep evolving