More A-listers have signed on to support the third Stand Up to Cancer telethon.

Organizers say Tom Hanks, Halle Berry, Justin Timberlake, Sofia Vergara, and Olympic gold medalists Gabrielle Douglas and Missy Franklin will participate in the hour-long TV special. It is set to air Friday on ABC, CBS, NBC, Fox and more than a dozen cable channels.

Cristiano Ronaldo is still "feeling sad" at Real Madrid but denies it's because of money as he committed himself to the Spanish club on Tuesday.

Ronaldo revealed his feelings after scoring twice in a 3-0 victory against Granada in the Spanish league on Sunday, saying professional reasons had made him unhappy at Madrid without revealing them.

Victoria Azarenka kept chiding herself — "Don't be a chicken" — while cobbling together a 6-1, 4-6, 7-6 (5) rain-interrupted win that eliminated defending champion Sam Stosur and put the top-seeded Belarusian in her first semifinal at Flushing Meadows.

Tuesday's win also assured Azarenka of retaining the No. 1 ranking no matter what happens the rest of this week.

The 13th tropical depression of the Atlantic hurricane season formed far out in the ocean Monday and was posing no immediate threat to land.

The depression was located 1,350 miles northwest of the Cape Verde Islands on Monday afternoon and had maximum sustained winds of 35 mph, the National Hurricane Center in Miami said. It was creeping northwest at 3 mph and was expected to continue in a northwesterly direction.

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.