Something strange happens to water as it moves through the stems of horsetail plants – and this unique process provides ...

Newly analyzed jawbones from 380-million-year-old lungfish are shedding light on the feeding behaviors of our earliest ...

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

Predatory fish that evolved into the first terrestrial animals on Earth are still revealing insights into the origins of ...

Ever been late because you misread a clock? Sometimes, the "clocks" geologists use to date events can also be misread.

A study of fossils from the Permian-Triassic extinction event 252 million years ago shows that forests in many parts of the ...

The ancient history of Earth has always been hard to read. Most of the planet’s earliest crust has been lost, buried, or ...

New research suggests ancient Earth was a water world, with little to no land in sight. And that could have major implications for the origin and evolution of life. While modern Earth’s surface ...

Ancient hunter-gatherers built monumental mounds at Kaillachuro in Peru without kings, rewriting history of "monumental ...

Rocks older than 4.03 billion years could shed light on Earth's earliest geological history, but they're incredibly rare.

Eight reactions could connect ancient Earth to modern day. Here's how. A missing piece of Earth's evolutionary timeline may have been found. Using computational modeling, a team of scientists ...

NARRATOR: "Ancient Earth: Birth of the Sky," right now, on "NOVA." ♪ ♪ (rumbling) NARRATOR: In the depths of space lies a young, unrecognizable planet.