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Dr. Raul Ruiz grew up in a trailer park in this poor district in Southern California’s interior.

Should the U.S. Military Get Involved in Libya's Struggle?

2011 was a tough year in many ways: The economy is still struggling; Europe is dealing with a huge debt crisis; and Japan is still recovering from a devastating tsunami. But from e-books to HIV treatment, there are people, products and ideas that have done well in 2011.

NATO has suspended some joint operations and training with the Afghan Army and police. While the suspension is temporary, it raises serious questions about the role of U.S. troops in Afghanistan, and whether or not Afghans will be ready to take control of their own security in 2014.

In Afghanistan and other conflict zones, the military is often first on the ground, followed by diplomats, contractors and journalists. Next, in many cases, are aid workers: People who work for private organizations and strive to remain impartial in some of the world's most dangerous places.

A San Diego man is recovering today following a rare type of surgery at Thornton Hospital that left him with two beating hearts.

The earthquake that shook Chile last weekend was powerful enough to push up the Andes a few feet, shift Earth's axis and even speed up the planet’s spin. Ross Stein, a geophysicist at the U.S. Geological Survey, explains the fallout of the quake and the physics that triggered it.

Airs Tuesday, March 2, 2010 at 8 p.m. on KPBS TV

As global temperatures rise, many plants and animals are moving to higher elevations to keep their cool. But a new study found plants in northern California are actually moving downhill, where it's wetter. "These plants are tracking water availability more so than temperature," one researcher says.

A recent independent report on the Fukushima nuclear accident found that a far worse meltdown could have forced the evacuation of Tokyo's 30 million people.