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American Roger Kornberg will receive the Nobel Prize in chemistry for his groundbreaking research on DNA transcription. For Kornberg, winning the Nobel is a family affair. His father won a Nobel in 1959 for his own work on DNA.

This year's Nobel Prize in chemistry goes to a biologist. Roger Kornberg at Stanford University is being honored for figuring out the details of how our cells read DNA. He's not the first in his family to win a Nobel Prize. His father, Arthur Kornberg, won in 1959.

Consumer advocates say with the recent approval of a number of cost-saving measures, it’s been a good year for health care reform in California. But advocates say the biggest prize, universal health

Americans John Mather and George Smoot (left) have won the 2006 Nobel Prize for Physics. Their work on cosmic radiation helped pinpoint the age of the universe and added weight to the big-bang theory, which holds that the universe was created 13 billion years ago in an unparalleled explosion.

Americans Andrew Z. Fire and Craig C. Mello win the Nobel Prize in Physiology or Medicine for discovering "RNA interference," a way organisms turn off individual genes. The discovery is considered by many scientists to be a breakthrough in modern biology.

This year's Nobel Prize in Physiology or Medicine goes to two American researchers, Andrew Fire of Stanford University and Craig Mello of the University of Massachusetts. The pair, who discovered how to selectively silence genes that cause disease, will share the $1.4 million prize.

Host Gloria Penner talks to a photographer who documented Central American children making the long, dangerous trek to the United States.

Steven Zaillian is an Oscar-winning screenwriter (for

The Tribune Co. is trying to quell dissent in its corporate ranks, as the publisher and editor of The Los Angeles Times, the chain's largest paper, are seemingly defying calls for more cuts from the corporation's Chicago headquarters.

The Bill and Melinda Gates Foundation plans to help Africa produce food. In the 1960s, advances in crop breeding and farming technology sparked a green revolution. But, for a variety of reasons, most of Africa was left out. The new initiative hopes to succeed where past efforts have failed.