Greece's Culture Ministry has warned against "overbold" speculation that an ancient artificial mound being excavated could contain a royal Macedonian grave or even Alexander the Great.

Site archaeologist Aikaterini Peristeri has voiced hopes of finding "a significant individual or individuals" within.

The man whose research team discovered the wreckage of the Titanic has now turned his attention to the deepest trough of the Caribbean Sea.

Dr. Robert Ballard was aboard a 211-foot (64-meter) research vessel with dozens of other scientists to probe the Cayman Trough this week and collect samples of organisms they say might reveal how life might exist on other planets.

U.S. doctors say they're stunned by a man who revived 45 minutes after his heart stopped beating and he was declared dead.

Doctors say presumed-dead diesel mechanic Tony Yahle was being prepared by nurses to be seen by his family when he began to show signs of life. They say he fully awoke at the hospital five days later.

Caroline Wozniacki beat American Sloane Stephens 7-6 (6), 6-2 on Thursday to reach the semifinals in New Haven for the sixth consecutive year.

The four-time champion is 23-1 at the Connecticut Tennis Center, with her lone loss coming a year ago when she had to retire from the semifinals because of a knee injury.

Defending champion Andy Murray could face top-seeded Novak Djokovic in the semifinals at the U.S. Open, while Rafael Nadal and Roger Federer — who have never played each other at Flushing Meadows — might meet in the quarterfinals.

Murray earned his first Grand Slam championship by beating Djokovic in the 2012 U.S. Open final, then added a second by beating him in the Wimbledon title match last month. But there can't be a rematch in New York in the final, thanks to Thursday's draw.

The Ghana Football Association says AC Milan's Kevin-Prince Boateng has made himself available again for selection in the national team.

Boateng retired from internationals following the 2010 World Cup — where Ghana reached the quarterfinals — and didn't play in the 2012 and 2013 African Cups.

LaShawn Merritt won the men's 400 meters at the DN Galan Diamond League meet on Thursday in his first major race since regaining his world championship title at Moscow last week.

Merritt won in 44.69 seconds, more than a half-second clear of Luguelin Santos of the Dominican Republic, the bronze medalist at Moscow. Pavel Maslak of the Czech Republic was third.

Since the first test-tube baby was born more than three decades ago, in vitro fertilization has evolved into a highly sophisticated lab procedure. Now, scientists are going back to basics and testing a simpler and cheaper method intended mainly for developing countries.

In the West, many would-be parents spend thousands of dollars for IVF, which involves pricey incubators and extensive screening. But European and American scientists say a simplified version of the entire procedure aimed at developing countries could be done for about 200 euros ($265) with generic fertility drugs and basic lab equipment that would fit inside a shoebox.

Google Glass, a spectacle-like computing device drawing lots of attention, can serve as an automated tour guide with the help of a new application from a little-known startup hatched within the Internet's most powerful company.

The app, called "Field Trip," is being released Wednesday by Google-owned Niantic Labs for the 10,000 people currently testing an early model of Glass known as the Explorer edition. It becomes just the ninth app to be approved by Google Inc. for use on Glass during an experimental phase. The device's mass market release is expected early next year.

Apple's grip on China's tablet market has loosened as Asian tech companies increase sales with cheaper Android tablet computers, a market report showed Thursday.

Dickie Chang, senior market analyst at research firm IDC, said Apple supplied 28 percent of tablet computers in China during the April-June quarter, down from 49 percent dominance a year earlier.