Slow orbital changes caused pulses in Earth's oxygen cycle 500 million years ago, which spurred explosions of animal life.

For roughly 2 billion years of Earth's early history, the atmosphere contained no oxygen, the essential ingredient required ...

Fossil skulls reveal how extinct mammals smelled the world, with new research linking olfactory bulb size to gene counts.

The planet has been flipping between two main modes of carbon recovery depending on the state of coral reefs, new research ...

WINONA, Minn. — It was a dinosaur that once roamed the Earth 66 million years ago, and now a big piece of it sits housed in a ...

An international team led by researchers from the Department of Earth and Planetary Sciences at The University of Hong Kong ...

Evolution is neither purposeful nor intentional: it has no ideal, aim, or end-point. For evolutionary change, there are no ...

Scientists have discovered that complex life began evolving much earlier than traditional models suggested. Using an expanded ...

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

The extinct rhinoceros, described in the journal Nature Ecology & Evolution, is the northernmost rhino known to have ever ...

Fresh evidence suggests early Earth wasn’t locked under a rigid stagnant lid but was already experiencing intense subduction.

About 60 million years ago, long before humans and just after the dinosaurs vanished, a giant snake rose to the top of ...