New research challenges a key archaeological site in Chile, raising fresh questions about when humans first arrived in the Americas.

Scientists have uncovered the oldest direct evidence yet that Earth’s tectonic plates were on the move 3.5 billion years ago. By analyzing magnetic fingerprints in ancient rocks, they reconstructed ...

The Cleveland Arcade decorated with American flags for the U.S. Bicentennial in October 1976 in Cleveland. (Howard Ruffner/Getty Images) Table of Contents In July, the United States will celebrate ...

The true architects, the spies, the strategists, and the sailors who literally sailed off the edge of the known world, have been erased from our collective memory. This is the untold story of the ...

A landmark site in the peopling of the Americas is several thousand years younger than we thought. While that means very different things about the site itself, it doesn’t change the big picture as ...

Scientists have found the oldest direct evidence for tectonic motion on Earth by more than half a billion years ...

Researchers revisited the 1970s discovery of ancient stone tools at Monte Verde—an iconic site in Chile that transformed our understanding of how and when humans arrived in the Americas.

Data suggest people lived at Chile’s Monte Verde site thousands of years later than thought, challenging key “pre-Clovis” evidence. Not all agree.

Magnetic crystals provide the earliest evidence yet of the plate tectonics that likely made Earth habitable, pushing its start back by 140 million years.

The history of Earth is written on the great tablets of tectonic plates. The motions of plates shaped land masses, formed ...

A new analysis of archaeological layers at Monte Verde in Chile suggests that people lived there 4,200 years ago, not 14,500 years ago as originally proposed. But many experts point to errors in the ...

I was brainstorming with [stylist Law Roach] about how I would theme dress for this film, and I kind of remembered the saying, ‘Something old, something new, something borrow ...