Scientists have uncovered the oldest direct evidence yet that Earth’s tectonic plates were on the move 3.5 billion years ago.

The rocks didn’t look like much from the outside. Scattered across a remote stretch of western Australia called North Pole ...

This piece is part of a special project on deep time examining what the Western U.S. was like thousands, millions and even billions of years ago, and how that history is still visible and ...

Carbon released from Earth’s spreading tectonic plates, not volcanoes, may have triggered major transitions between ancient ice ages and warm climates, new research finds. Published today in ...