Tag: North America

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Sea level rise predicted to threaten more than 13,000 archaeological sites in southeastern US

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Sea-level rise may impact vast numbers of archaeological and historic sites, cemeteries, and landscapes on the Atlantic and Gulf coasts of the southeastern United States, according …

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More mammoth bones recovered from Michigan farm

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University of Michigan paleontologists conducted a second excavation this week at the Chelsea-area farm where the skull, tusks and dozens of intact bones of an ice …

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Remains of ancient sea cow discovered on California island

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Scientists say they’ve unearthed fossil remains of a sea cow that lived in the shallow waters off Southern California’s Channel Islands some 25 million years ago. …

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Analysis of ancient DNA reveals a previously unrecognized genus of extinct horses that once roamed North America

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An international team of researchers has discovered a previously unrecognized genus of extinct horses that roamed North America during the last ice age. This illustration depicts …

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Archaeologist says fire, not corn, key to prehistoric survival in arid Southwest

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Conventional wisdom holds that prehistoric villagers planted corn, and lots of it, to survive the dry and hostile conditions of the American Southwest. Corn that prehistoric …

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Oxygen levels link to ancient explosion of life, researchers find

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Oxygen has provided a breath of fresh air to the study of the Earth’s evolution some 400-plus million years ago. Washington University researchers were part of …

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Colorado River's connection with the ocean was a punctuated affair

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The Colorado River’s initial trip to the ocean didn’t come easy, but its story has emerged from layers of sediment preserved within tectonically active stretches of …