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

From an incredible series of revelations about the ancient humans called Denisovans to surprising discoveries about tool ...

When astronauts set foot on Mars, it will be one of humanity’s greatest milestones, marking the start of a new era of ...

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

A major study shows complex cells evolved gradually in an oxygen-poor world, challenging long-held assumptions about life’s ...