Stone-age tools found, but who wielded them?

Ice sheets may be hiding vast reservoirs of powerful greenhouse gas

Expedition probes undersea magma system

New geological evidence aids tsunami hazard assessments from Alaska to Hawaii

Mountains west of Boulder continue to lose ice as climate warms

Northern Methane: Largest natural sources of this potent greenhouse gas

Ash falls blighted the grasslands of Africa’s Rift Valley

Thousands of landslides in Nepal earthquake raise parallels for Pacific Northwest

Growth rings on rocks give up North American climate secrets

New leptoceratopsid found from the Upper Cretaceous of Shandong Province, China

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