Patient after patient asked: Is eating organic food, which costs more, really better for me?

Unsure, Stanford University doctors dug through reams of research to find out — and concluded there's little evidence that going organic is much healthier, citing only a few differences involving pesticides and antibiotics.

As U.S. college students return to campus in the coming weeks, they'll be showered in the usual handouts of coupons, condoms and credit cards. But some schools are also giving students what a growing body of research reveals could make a huge difference in their college careers: ear plugs, sleep shades and napping lessons.

College health officials are finally realizing that healthy sleep habits are a potential miracle drug for much of what ails the famously frazzled modern American college student: anxiety, depression, physical health problems and — more than most students realize — academic troubles. Some studies have found students getting adequate sleep average a full letter grade higher than those who don't.

Michael Clarke Duncan, the hulking, prolific character actor whose dozens of films included an Oscar-nominated performance as a death row inmate in "The Green Mile" and such other box office hits as "Armageddon," ''Planet of the Apes" and "Kung Fu Panda," is dead at age 54.

Duncan died Monday morning at Cedars-Sinai Medical Center in Los Angeles, where he was being treated for a heart attack, said his fiancée, reality TV personality Rev. Omarosa Manigault, in a statement released by publicist Joy Fehily.

Tiger Woods has become the first $100 million man on the PGA Tour.

Woods finished third Monday in the Deutsche Bank Championship and made $544,000, pushing his career total to $100,350,700. Next on the list is Phil Mickelson, who finished fourth at the TPC Boston and has $66,805,498.

Peruvian authorities say wastewater laced with heavy metals from a major zinc mine has spilled into a tributary of the Amazon, contaminating at least six miles of the waterway.

Pasco regional mining environmental engineer Juan Escalante tells The Associated Press that an unknown quantity of toxic wastewater from the Atacocha mine escaped from a sedimentation well Wednesday into the Huallaga River. The mine is owned by the Brazilian company Votorantim.

An Egyptian security official said Monday some 20 tanks have been withdrawn from the Sinai Peninsula after a month-long deployment in an anti-terrorism military offensive.

The tank deployment earlier this month brought complaints from Israel as the 1979 peace treaty between the two countries restricts heavy weapons in the peninsula, which borders the Jewish state.

Britain's Prince Andrew has rappelled 785 feet (239 meters) down the side of Europe's tallest building to raise money for charity.

The 52-year-old's stunt began on London skyscraper The Shard's 87th floor and finished on the 20th, and took him 30 minutes.

Organizers of the National Buffalo Wing Festival say competitive eater Joey Chestnut has devoured a record 191 chicken wings in 12 minutes.

Chestnut set the record Sunday during a wing-eating contest at the annual festival in Buffalo. He beat the old record of 183 wings, set last year by Sonya Thomas, the Black Widow.

Rafael Nadal has a partially torn patella tendon in his left knee and will be sidelined for at least the next two months, including Spain's upcoming Davis Cup semifinal against the United States.

"I have to recover and I'll be back once the pain is gone," Nadal said in a website posting linked to his Twitter feed.

Equaling the record for the latest finish at the U.S. Open, Philipp Kohlscreiber of Germany eliminated John Isner of the United States 6-4, 3-6, 4-6, 6-3, 6-4 at 2:26 a.m. local time Monday to reach the fourth round.

The official completion time was the same as a second-round match in 1993, when Mats Wilander beat Mikael Pernfors. The latest finishing match at any Grand Slam was the 4:34 a.m. end to Lleyton Hewitt's third-round encounter against Marcos Baghdatis at the 2008 Australian Open.