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Climate change is exaggerating the normal swings in weather. For the American Southwest, that means more intense waves of heat, drought and fire that could wipe out trees that have stood for centuries. It's already revamping the ecology of the landscape.

Just how do trees die? It seems like a simple question, but the answer still eludes scientists. And understanding forest ecology is increasingly important as the effects of climate change begin to take root.

Hordes of people, hot and frustrated, crowd toward the Olympic ticket offices, hoping against hope they gain entry to their favorite events. Two Americans leaning against a nearby wall could show them how. They have bought a few tickets — not to their favorite events, but these two professional fans will go to pubs and other meeting places and trade their tickets (and maybe a little cash ) for the tickets they really want.

The nonprofit in charge of distributing organs wants to revamp the system for distributing kidneys for the first time in 25 years. But some transplant specialists and bioethicists fear the changes could end up discriminating against some patients.

In November, voters will decide whether new state laws on issues such as labor policy, immigration and gay marriage can remain in effect. They're using a process called "popular referendum." Different from a ballot initiative, it amounts to a public veto of elected officials. And its use is growing.

Two weeks after the attacks that killed the U.S. Ambassador to Libya and three other Americans, there is still confusion about what exactly happened and whether the United States might have prevented the tragedy. Critics of the Obama administration accuse the White House of dissembling about the attack. NPR's Dina Temple-Raston talks to Melissa Block.

Coats had fallen out of favor, but they're back — cozy yet chic as ever — on the New York runways. It's a shaky time for the fashion industry, and many designers have decided to "batten down the hatches and do the thing that they do best," says Sally Singer, editor of T: The New York Times Style Magazine.

A woman who accused GOP presidential candidate Herman Cain of sexual harassment alleged Friday that the incidents were "a series of inappropriate behaviors and unwanted advances from the CEO."

Last June, the city council of Holland voted against adding sexual orientation and gender identity to local anti-discrimination laws. Now, religious leaders and Republicans have joined to pressure the council to change that vote.

If you're not from St. Louis, you've probably never heard of Provel. It's a processed blend of cheeses extolled in the area for its buttery texture and smoky, tangy flavor. Now Provel has made its way into the unlikeliest of places: the hipster foodie mecca of Brooklyn.