Major clues to the origins of our planet—and life itself—are locked inside some three billion-year-old volcanic rocks from ...

Geologists studying some of the planet's oldest volcanic rocks have uncovered new evidence that water was playing a major ...

A remote outcrop in Canada harbors rocks that are at least 4.16 billion years old, researchers report June 26 in Science. If true, these rocks would be the oldest known on Earth and the first to date ...

Among the fruits of more than 80 hours the Apollo astronauts spent on the lunar surface were the treasures that came home. All told, the explorers carted back 842 pounds (382 kilograms) of Moon rocks, ...

Pebble Beach is on the coast just north of Bean Hollow State Beach. Come for the pebbles, stay for the rocks. It was a weekday the last time I visited Pebble Beach, on the San Mateo coast just south ...