Instead of paying attention in high school, Nick Cammarata preferred to read books on whatever interested him. He also has a gift for coding that got him into Carnegie Mellon University's esteemed computer science program despite his grades.

But the 18-year-old programmer won't be going to college this fall. Or maybe ever.

A growing shortage of medications for a host of illnesses — from cancer to cystic fibrosis to cardiac arrest — has hospitals scrambling for substitutes to avoid patient harm, and sometimes even delaying treatment.

"It's just a matter of time now before we call for a drug that we need to save a patient's life and we find out there isn't any," says Dr. Eric Lavonas of the American College of Emergency Physicians.

Hollywood's hangover is a lot bigger the second time around.

"The Hangover Part II" hauled in $86.5 million in its first weekend, putting Hollywood on course to set a new revenue record for the long Memorial Day weekend, according to studio estimates Sunday.

Computer manufacturers of all sizes and descriptions have been pushing to get a piece of the ever-expanding tablet market created by the launch of Apple's iPad in April 2010.

The obsession with tablet computing will be on full display Tuesday as Computex, the world's second-largest computer show, begins its annual five-day run in Taipei. The prominence of tablets underscores a dramatic shift under way in the personal computer industry — and keenly felt in Taiwan, which is home to some of the world's biggest PC manufacturers — as many consumers opt to buy a tablet rather than a new PC.

China's e-commerce giant is stepping up its heated rivalry with bricks-and-mortar retailers with the launch of a five-story home furnishings showroom in Beijing.

Alibaba Group's Taobao, an Internet platform through which an estimated 3 percent of all retail sales in China pass, opened the showroom Friday for customers to try out sofas, tables and other big-ticket items before placing an order online with one of its merchants.

Novak Djokovic had a successful day off from tennis Monday, reaching the semifinals of the French Open when his quarterfinal opponent withdrew because of injury.

Fabio Fognini, who injured a muscle in his left leg while beating Albert Montanes on Sunday, announced Monday that he would not be able to play Djokovic, who is 41-0 in 2011 and has won 43 straight matches overall.

The Israeli military is preparing for the possibility of violent protests along its borders in the coming days, aiming to avoid a repeat of deadly unrest that erupted earlier this month, a senior military official told The Associated Press on Sunday.

Facebook-organized activists have called for demonstrations next weekend in Lebanon, Syria, and Jordan to mark the anniversary of the 1967 Mideast war, in which Israel captured the West Bank, Gaza Strip east Jerusalem and Golan Heights.

The head of the U.N. AIDS agency told a Vatican conference on AIDS Saturday that Pope Benedict XVI's comments about the use of condoms in preventing HIV transmission had opened new prospects for dialogue with the U.N.

Dr. Michel Sidibe, executive director of UNAIDS, said it will help strengthen the fight for greater access to treatment for those afflicted. Sidibe said Benedict's views were important, even if differences remain between the U.N. and Catholic Church.

Internet phone service Skype says a small percentage of its 170 million users have been unable to sign in to its service, a problem that it expects to fix with a software update.

Skype said on its website the trouble stemmed from corrupted data affecting computers using Windows, Linux or Macintosh operating systems.

A Canadian couple says it's none of the world's business to know their baby's gender despite a firestorm of criticism over their controversial decision to keep the infant's sex a secret.

Kathy Witterick said her 4-month-old baby Storm should be able to develop its own sexual identity without having to conform to social stereotypes or bow to predetermined expectations associated with gender.