Rafael Nadal is ready to return to competitive tennis, confirming Tuesday that he'll play in an exhibition tournament in Abu Dhabi at the end of the month following a six-month break to recover from a knee injury.

"Can't wait to get back on court in Abu Dhabi at the end of the month," the 11-time Grand Slam champion said on his Facebook page and Twitter account. "I won the Mubadala World Tennis Championship in 2010 and 2011 — would love to get my hands on the trophy again this year!"

With the Van Gogh Museum in Amsterdam closed for renovations, the world's second-largest collection of the tortured Dutch master's work is stepping into the limelight.

The lesser-known Kroeller-Mueller museum in the eastern Netherlands has revamped the layout of its central rooms, giving more space and focus to many of its top works.

Microsoft is rolling out dozens of new apps for the Xbox 360, building on statistics that show members of its paid online subscription service spend more time on it watching video than they do playing multiplayer games over the Internet.

The company said Tuesday that by early next year it will add more than 40 apps to its Xbox Live service, such as MTV, The CW Network and CBC's Hockey Night in Canada. Many of the apps will require paid subscriptions on top of the Xbox Live Gold subscription, which costs $60 a year, or $10 a month.

A holiday tradition in this upstate New York resort town has a peppermint twist: pig-shaped hard candies are sold with little metal hammers to smash them at Christmas.

The peppermint pigs, which can weigh up to a pound, are considered good luck charms by some. Family members will take turns whacking the piggy tokens of holiday cheer into little candy shards.

Biotech pioneer Amgen Inc., in a bid for a big edge in using people's genetic information to find better ways to attack diseases, is buying human genetics research and analytics leader deCODE Genetics for $415 million.

Amgen, the world's largest biotech company by revenue, and deCODE, based in Reykjavik, Iceland, announced the all-cash deal Monday.

In the Colorado mountains, a spike in air pollution has been linked to a boom in oil and gas drilling. On the plains of north Texas, there's a drilling boom, too, but some air pollution levels have declined. Opponents of drilling point to Colorado and say it's dangerous. Companies point to Texas and say drilling is safe.

The good news, nearly all sides agree, is that the technology exists to control methane gas leaks and other air pollution associated with drilling. The bad news is that the industry is booming so rapidly in the U.S. that some companies and some regulators can't seem to get ahead of the problems, which could ultimately cost billions of dollars to remedy.

U.S. authorities said a medical helicopter has crashed in northern Illinois, killing all three people on board.

The Federal Aviation Administration reported the helicopter crashed Monday night while traveling from Rockford, near the Wisconsin border, to a hospital about 60 miles (100 kilometers) south in Mendota.

Thousands of Spanish medical workers and residents angered by budget cuts and plans to partly privatize the cherished national health service marched through some of Madrid's most famous squares on Sunday.

More than 5,000 people rallied in Puerta del Sol, according to police estimates, after marching from Neptuno and Cibeles squares. Organizers estimated attendance at 25,000 protesters, many dressed in white and blue hospital scrubs. The march, called "a white tide" by organizers, was the third such large-scale protest this year.

Moon Tae-Hwa stares at his computer, dizzy and nauseous from the hours of porn he's viewed online. He feels no shame — he says he's "cleaning up dirty things."

Moon is among the most successful members of the "Nuri Cops" (roughly "net cops"), a squad of nearly 800 volunteers who help government censors by patrolling the Internet for pornography in their spare time.

The Agriculture Department is responding to criticism over new school lunch rules by allowing more grains and meat in kids' meals.

Agriculture Secretary Tom Vilsack told members of Congress in a letter Friday that the department will do away with daily and weekly limits of meats and grains. Several lawmakers wrote the department after the new rules went into effect in September saying kids aren't getting enough to eat.