As officials release updates, sharp-eyed observers say key details don’t align, fueling fresh debate about what really happened to Nancy Guthrie — and when.

A supercontinent is not just a bigger continent. It is a planetary-scale reorganization of land, ocean gateways, and ...

Researchers used three different methods to date the site, challenging the preexisting notion of the site being between 1. 2 ...

A research team has produced the first direct experimental evidence that Earth’s iron core traps hydrogen inside nanoscale ...