On June 14, 1914, three men climbed Lassen Peak to see why a seemingly dormant volcano had started rumbling 16 days before. Now, peering into a newborn crater, they felt the ground tremble.

But this remarkable preserve of Arizona's volcanic history is well worth a trip, especially for Arizona visitors in search of a great analog to Lassen Volcanic National Park. Sunset Crater sits in ...

The impact crater could be linked to the origins of life on Earth. The discovery of a massive crater formed by the impact of a meteorite more than three billion years ago is changing the way ...

Researchers in Western Australia’s Pilbara region have discovered the world’s oldest known meteorite impact crater, pushing back the previous record by more than one billion years. The newly ...