A Food and Drug Administration investigation into the safety of caffeine-added foods has prompted Wrigley to take its new caffeinated gum off the market for the time being.

Wrigley said Wednesday that it will temporarily halt sales and marketing of Alert caffeinated gum after discussions with the FDA. President Casey Keller said the company made the move "out of respect" for the agency, which said it would investigate the health effects of added caffeine on children and adolescents just as Wrigley rolled out Alert late last month. A stick of the gum has an amount of caffeine equivalent to half a cup of coffee.

For the first time, the government is publicly revealing how much hospitals charge, and the differences are astounding: Some bill tens of thousands of dollars more than others for the same treatment, even within the same city.

Why does a joint replacement cost 40 times as much at one hospital as at another across the country? It's a mystery, federal health officials say.

Using mobile health technology to monitor patients in poor urban areas could improve residents' access to health care while also reducing health care spending, a study conducted in a Rio de Janeiro hillside "favela" slum suggested Wednesday.

The study, by the New Cities Foundation, looked at the effects of bringing state-of-the-art health care diagnostic tools to sick and elderly residents of Rio's Dona Marta favela, an underserved shantytown up a steep hill from most conventional health care services.

Coca-Cola says it will make lower-calorie options and clear calorie labeling more widely available around the world, intensifying a push against critics who say its drinks pack on the pounds.

The Atlanta-based company, which makes Sprite, Fanta and Minute Maid, already offers diet drinks in most markets. But there's no consistency in their availability, particularly in emerging markets such as China and India.

The colorful handmade giraffes, elephants and warthogs made in a Nairobi workshop were once only dirty pieces of rubber cruising the Indian Ocean's currents.

Kenya's Ocean Sole sandal recycling company is cleaning the East African country's beaches of used, washed-up flip-flops and other sandals.

A 28-year-old woman miraculously survived after her husband accidentally shot her in the mouth with a harpoon, Brazilian officials said Wednesday.

The Rio de Janeiro State Health Department said in a statement that the woman's husband was cleaning his spear gun when it went off, firing a harpoon that hit her cervical spine.

Scientists said Wednesday that flu infections were rising among pigs raised for slaughter on farms in south and southeastern China, also plagued by bird flu.

And the risk of spillover to humans was "constant or growing", according to one of the authors of a study published in Proceedings of the Royal Society B.

Alex Ferguson is retiring at the end of the season, bringing a close to a trophy-filled career of more than 26 years at Manchester United that established him as the most successful coach in British football history.

"The decision to retire is one that I have thought a great deal about and one that I have not taken lightly," the 71-year-old Scotsman said in a statement on Wednesday. "It is the right time."

New York's Carmelo Anthony scored 32 points — 16 during a 30-2 onslaught in the second half — to lead the Knicks to a 105-79 win over the Indiana Pacers on Tuesday, squaring their NHL Eastern Conference semifinal series at 1-1.

In the day's other game, Memphis used a late run to beat Oklahoma City and also level their Western Conference series at a game apiece.

Grigor Dimitrov stunned Novak Djokovic in the second round of the Madrid Open on Tuesday, beating the top-ranked Serb 7-6 (6), 6-7 (8), 6-3 for the biggest win of his career.

The 28th-ranked Bulgarian saved three set points in the first before taking the lead, and Djokovic then appeared to hurt his right ankle when trailing 4-2 in the second. The Serbian player slipped on the baseline and winced in pain, then immediately called for a trainer and took a lengthy break to get treatment.