Pre-reptile may be earliest known to walk upright on all fours

Silica-sand deposits in Arizona

New Sunshine State Maps Add U.S. Forest Service Data

Siberian Traps likely culprit for end-Permian extinction

Unlocking secrets of how fossils form

Upslope migration of tropical plants due to climate change

Scientists use lasers to simulate shock effects of meteorite impact on...

New Flea Genus and Species Found in 20-million-year-old Amber

New perspectives for long-term climate predictions

Largest carnivorous dinosaur identified in Australia

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