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Airs Wednesday, July 21, 2010 at 9 p.m. on KPBS TV

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.

Many coastal residents are fighting for their economic survival -- and expect BP to keep them afloat. For three months, BP has been promising to make "whole" anyone who has lost income because of the oil spill. Last week, BP announced an expedited process, but claimants say it's anything but quick.

From health care reform to "don't ask, don't tell," the 111th Congress got a lot done -- it's been the most productive session since the 1960s. But how much of that legislation will survive the new Congress?

A study by Arizona State University’s Morrison Institute finds that the widespread perception that Phoenix and Tucson are facing a water crisis may be overstated.

Six Camp Pendleton-based Marines and a seventh stationed in Arizona were killed when two helicopters collided outside Marine Corps Air Station Yuma.

Ashley Dias needs lungs. So do lots of other patients. Scarcity is a problem with organ transplants, and, unlike other scarce resources, organs can't be bought or sold. Here's how doctors decide who gets to be at the top of the waiting list.

Every January 24 marks the beginning of Daniel Jackson Week, launching a series of concerts featuring Jackson and other local musicians.

The U.S. Holocaust Memorial Museum and Ancestry.com's World Memory Project allows people to sift online through hundreds of thousands of documents that previously required a painstaking manual search.

The San Diego Zoo outfitted 36 desert tortoises with radio transmitters, 24 of them with GPS systems, to track their movements and habitat choices in Nevada, the park announced today.