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The stem cell in bone marrow can become muscle, bone or fat. A biomedical engineer believes he has found a way to accomplish making muscle and bone. It involves standing on a gently vibrating platform for 15 minutes a day.

President Bush says there's an "emerging threat" to the U.S. and Europe from Iran's alleged pursuit of nuclear weapons and ballistic missiles. Critics say there are a few things wrong with the president's proposal for missile defense.

Lin, who along with two of the film's stars stopped by KPBS after hosting the San Diego premiere of his film at the San Diego Asian Film Festival, noted that Bruce Lee was a huge part of his identity as a kid growing up in Orange County. But the irony was that "my first introduction to Bruce Lee wasnt even Bruce Lee -- it was Bruce Li and Bruce Loo because when I was growing up, they had this thing called Kung Fu Theater, and they booked the cheap films, not the real Bruce Lee films. So I saw all these imitators first. It was with the advent of the VCR that I finally saw Bruce Lee in

Education advocacy groups are pouring campaign funds into Utah, where voters will cast ballots in a referendum to repeal school vouchers. The vouchers offer taxpayer scholarships to every student in the state.

For the last week, firefighters have been working hard to beat the wildfires. KPBS reporter Nicole Lozare spent some time with them on the front lines.

In Argentina, the wife of President Nestor Kirchner is the clear front-runner in the field of 14 candidates running in Sunday's presidential election. Pundits say Cristina Fernandez de Kirchner is likely to be elected in the first round of voting, taking the reins from her husband.

U.S. Sen. Mel Martinez, a Republican from Florida, is a first-generation Cuban American. Martinez reacts to President Bush's recent speech on a post-Fidel Castro Cuba. Martinez also sets the record straight on why he chose to step down as Chair of the Republican National Committee.

Evacuation orders have been lifted in many parts of San Diego, but hundreds of wildfire victims have no place to go. Meanwhile, officials are turning their attention to rebuilding efforts and considering how to prepare for the next big fire.

Democrats failed to win a key test vote Wednesday on a measure to allow certain illegal immigrant children to put themselves on a path to citizenship if they go to college or join the military.

Wildfires in Southern California have done at least $1 billion in damage in San Diego County alone — and that figure is expected to rise, officials warn. The fires have burned more than 410,000 acres in four days.