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German researcher Gerhard Ertl has won the 2007 Nobel Prize in chemistry. Ertl developed new methods for studying the "surface chemistry" that is critical to everything from catalytic converters for cleaning up auto exhaust, to the chemical reactions that created the hole in the ozone layer.

The nomination of Michael Mukasey to be the next attorney general is back on track after a bit of a roller coaster ride this week. Two Senate Democrats — Charles Schumer of New York and Diane Feinstein of California — said late Friday that they would support Mukasey.

Thousands of Southern California evacuees are finding shelter at San Diego's Qualcomm Stadium. The evacuation center is being compared to the shelters set up at the Louisiana Superdome and Houston's Astrodome after Hurricane Katrina hit.

Tribal elders in Afghanistan are still negotiating the release of 23 South Koreans being held by the Taliban. Most of the hostages are in their 20s and 30s. Government troops have surrounded the kidnappers for several days.

The Writer's Guild of America says its 12,000 members will go on strike Monday. The writers want to be paid more when their movies or shows are sold as DVD's and internet downloads.

Some schools that have had MRSA, or methicillin-resistant staph aureus, infections are responding with deep-cleanings to kill germs. But to prevent MRSA infections, health experts say, schools should focus on changing student hygiene.

More than a quarter-million people have been ordered to evacuate from the path of the Southern California wildfires. Hot, dry wind off the desert is whipping the series of fires, and authorities say there's little they can do to stop the flames until the winds die down — Tuesday at the earliest.

North Korea on Thursday submitted its long-awaited declaration detailing its nuclear weapons activities. In turn, the Bush administration said it will lift some trade sanctions against the country, and move to take it off the U.S. terrorism blacklist.

The American Medical Association (AMA) is apologizing for years of discriminatory practices against African-Americans within the medical community. Dr. Ronald Davis, immediate past president of the organization, discusses what inspired the apology. Davis is joined by Dr. Carl Bell, a black doctor, who says the AMA still has a long way to go.

Analysts on Wall Street fear that another big investment bank could be teetering on the edge of disaster. Investors this week will watch closely the earnings of major banks and look for any signs that aggressive moves by the Federal Reserve are bringing stability back to credit markets.