With 16 Grammys, millions of records sold, several defining hits and a superstar husband, Beyonce has nothing to prove.

But sometimes, even queens need to show what it means to be royalty. And on Sunday night, Beyonce arrived at the Roseland Ballroom to give fans and critics alike a reminder that she remains the head diva in the music world. She made her case to a select group of fans one rump-shaking move at a time.

Cesc Fabregas' long awaited return to his boyhood club finally was finalized Monday when he signed a five-year contract with European champion Barcelona.

"It took a lot of years, months, days to get here ... it's nice to be home after eight years," the former Arsenal captain said in Catalan during his presentation to fans at Camp Nou, where he repeatedly kissed the Barcelona crest on his new No. 4 jersey.

Addiction isn't just about willpower. It's a chronic brain disease, says a new definition aimed at helping families and their doctors better understand the challenges of treating it.

"Addiction is about a lot more than people behaving badly," says Dr. Michael M. Miller of the American Society for Addiction Medicine.

The Chinese government is tightening adoption rules to combat child trafficking, state media reported Tuesday, a day after eight people convicted of abducting or murdering children received sentences including the death penalty.

Only orphanages will be able to offer abandoned infants and children for adoption, and adults who adopt without official registration will not be recognized as legal guardians, the China Daily reported.

A woman who attacked a painting at Washington's National Gallery of Art earlier this year has struck again, police say, this time lashing out against a Henri Matisse painting at the museum.

Susan Burns was arrested Aug. 5 after police say she walked over to Matisse's 1919 painting "The Plumed Hat," and slammed the painting repeatedly against a wall, damaging its frame but not the $2.5 million painting.

Al-Qaida in the Islamic Maghreb wants to put its footprint on the Arab Spring now that violence is fueling the uprisings, and in a two-part video is trying to lure new followers for revolt by jihad.

The push comes as the group has sought to expand its operations beyond its Algerian base and desert outposts to countries around Africa, from Nigeria to Libya, after the death of Osama bin Laden and after being sidelined when the Arab revolts erupted earlier this year.

Top-ranked Novak Djokovic won the Rogers Cup on Sunday for his ninth tournament victory of the year and record fifth in a season in an ATP Masters 1,000 event, beating Mardy Fish 6-2, 3-6, 6-4.

The 24-year-old Serb, the Australian Open and Wimbledon champion, is 29-0 this year on hard courts and 53-1 overall. He also won the Rogers Cup in 2007.

Eight weeks into her comeback, Serena Williams not only believes she can be as good as she once was. She can be better.

The 29-year-old American star made a pretty good point by capturing the Rogers Cup in commanding fashion Sunday, dispatching 10th-seed Samantha Stosur of Australia 6-4, 6-2 for her first Canadian crown since 2001.

Hollywood studio Relativity Media says it is partnering with two companies to make Chinese films for global audiences and distribute movies in the fast growing Chinese market.

The partnership teams Relativity with private equity firm SAIF Partners and IDG China Media, an investment arm of Boston-based International Data Group.

Elvis Presley fans love an anniversary.

Every year, thousands of Elvis devotees flock to Memphis to remember the singer's death on Aug. 16, 1977. The main event of "Elvis Week" is the solemn candlelight vigil at Graceland, his longtime home, at midnight Tuesday.