Southwest may face 'megadrought' within century, study finds

(Phys.org) —Due to global warming, scientists say, the chances of the southwestern United States experiencing a decadelong drought is at least 50 percent, and the chances of a "megadrought" – one that lasts up to 35 years ...

Defectors take the car, cooperators go by bus

National economies are driven by the automobile, even during an economic downturn. Every day, hundreds of millions of people take their cars to visit remote places, to commute, and to reach the supermarket.

Rare wetland plant found in Arizona now listed as endangered

A rare plant that depends on wetlands for survival is now on the federal endangered species list, a designation that environmentalists say will boost efforts to protect the last free-flowing river in the desert Southwest.

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