NASA explains why June 30 will get extra second

Iron: A biological element?

Backward-moving glacier helps scientists explain glacial earthquakes

Earth’s daily rotation period encoded in an atomic-level protein structure

Ordovician Carbon Isotope Curve

Newly found ring of teeth uncovers what common ancestor of molting...

Researchers Reconstruct Dinosaur Tracks

Scientists persuade volcanoes to tell their stories

Sefapanosaurus: New Sesotho-named dinosaur from South Africa

Sudden shift in ‘forcing’ led to demise of Laurentide ice sheet

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