Planets are often described as ancient, unchanging worlds. Planets are born out of chaos, shaped by violent collisions and swirling dust. They grow, they evolve, and in their own way, they age. Some ...

A new study from Harvard geoscientists reports the oldest direct evidence yet of plate motion, dating to 3.5 billion years ago. In a study published March 19 in Science, the researchers found that ...

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 ...