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This Christmas, you can add some joy to your life by adopting a homeless pet from your local animal shelter. You get the companionship only a pet can…

The only person known to have been cured of AIDS got a bone marrow transplant, so when two AIDS patients in Boston appeared to be free of the virus after transplants, scientists hoped they were cured, too. But the HIV virus has returned in both.

Amid growing fears of a potential genocide, the U.N. has approved military intervention in the former French colony.

Currently the world's No. 14 team, the U.S. must finish in the top two among Germany (No. 2), Portugal (No. 5) and Ghana to advance. Another group will pit England against Italy, Uruguay and Costa Rica. The tournament begins in Brazil in June.

Drawing from research presented at this year's Acoustical Society of America conference, psycholinguist Stefanie Shattuck-Hufnagel untangles tongue twisters to look at speech planning patterns, and professor Amalia Arvaniti discusses the "Valley Girl" dialect.

That difference translates to about $550 a year, according to a new meta-analysis of studies evaluating the retail costs of food, grouped by healthfulness. It's chump change for middle-class eaters, but a big gap for low-income families. Researchers say that's a problem that can be solved.

Many Syrians fled their country and took refuge just across the border, planning to wait out the war. But now, a growing number are working with smugglers to get to northern Europe. The Syrians say they see no end in sight to the civil war and want to start a new life.

The U.S. and Afghanistan have been at odds over a security agreement that allows U.S. troops to remain in the country past 2014. Hagel also met with leaders of Gulf nations to assure them the U.S. is not abandoning those ties in favor of a nuclear deal with Iran.

After several years of declining shrimp stocks, regulators have imposed a moratorium on shrimping in New England waters. The closure could hurt commercial fisherman and future demand for the Gulf of Maine shrimp, but scientists say the move may be the only way to prevent the population from collapsing.

Earlier efforts to use gene therapy to treat a rare immune disorder in young children failed when some of the children got leukemia. Scientists say they think they may have figured it out, with eight children now living normal toddler lives.