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March 06 2012

19:08

A New East Asian Import: Ozone Pollution

Researchers find that westerly winds can push ozone across the Pacific to the Southwest, where it descends to the ground level, sometimes pushing concentrations to unacceptable levels.

November 07 2011

18:26

Pine Trees Help Reconstruct a Long-Ago Drought

Scientists have long thought that the Southwest was prone to long, severe megadroughts far worse than any in modern times. But a new analysis may provide the strongest evidence yet of a severe one in the second century.
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May 04 2011

13:56

A Meditation on the Land

An academic program focuses on "how we've shaped the land, and how it has shaped us," the director says.

February 25 2011

19:56

A Future Mega-Drought in the Southwest?

The added warmth from emissions of greenhouse gases could tip the Southwest into an era of severe drought potentially lasting a millennium or more, a researcher says.

February 11 2011

19:59

January 13 2011

12:58

Spread of Deadly Virus Tied to Forest Decline

A new study suggests that the die-back of the West's aspens is not just marring the landscape, but also helping spread a fatal strain of hantavirus transmitted by deer mice.
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