The impact crater is the second discovered in China ... based on radiocarbon dating of charcoal and organic lake sediments from the site, the NASA statement says. Researchers collected these ...

The impact event is believed to have contributed to a minor extinction event. ・Located in Quebec, Canada, this well-preserved crater is known for its distinct ring-shaped lake. It is one of the ...

Crater Lake sits in a rugged portion of the Cascade Range and is famous for its deep, jewel-blue water. An impressive 20-mile ring of cliffs encloses the basin and adds to its magnificence. About a ...

Geologists have discovered the world's oldest known impact crater; it sits in the heart of Western Australia's ancient Pilbara region. An analysis of rock layers in the region suggests a crater at ...