Michael Peterson, an archaeologist at Redwood National Park in California, photographs the coastline annually to monitor erosion of archaeological sites. Jes Burns/OPB/EarthFix hide caption

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National Park Service Centennial

As Storms Erode California's Cliffs, Buried Village Could Get Washed Away

Until now, the archaeological philosophy at Redwood National Park has been "keep it in the ground." But for one Native American site, climate change may force the park to reconsider that approach.

Four sheep cloned from the same genetic material as Dolly roam the paddocks in Nottingham, England. The University of Nottingham hide caption

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Shots - Health News

'Clone Sisters' Of Dolly The Sheep Are Alive And Kicking

Dolly, the first cloned mammal, had early arthritis and died young, raising concerns that clones age prematurely. But a study confirms the sheep's four sister clones are healthy and aging well.

Parkinson's disease, smoking, certain head injuries and even normal aging can influence our sense of smell. But certain patterns of loss in the ability to identify odors seem pronounced in Alzheimer's, researchers say. CSA Images/Color Printstock Collection/Getty Images hide caption

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Shots - Health News

A Sniff Test For Alzheimer's Checks For The Ability To Identify Odors

New research suggests it may be possible to spot people in the early stages of Alzheimer's by testing their ability to recognize fragrances. The goal is a quick and inexpensive screening test.

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Parkinson's disease, smoking, certain head injuries and even normal aging can influence our sense of smell. But certain patterns of loss in the ability to identify odors seem pronounced in Alzheimer's, researchers say. CSA Images/Color Printstock Collection/Getty Images hide caption

toggle caption CSA Images/Color Printstock Collection/Getty Images

A Sniff Test For Alzheimer's Checks For The Ability To Identify Odors

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Four sheep cloned from the same genetic material as Dolly roam the paddocks in Nottingham, England. The University of Nottingham hide caption

toggle caption The University of Nottingham

'Clone Sisters' Of Dolly The Sheep Are Alive And Kicking

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