Doctors have long assumed that Cesarean sections might be the best choice for babies that will be born preterm. But a new study shows that C-sections are no safer than vaginal delivery for the most fragile of infants, those who are born early and who are small for their age.

Drew and Skyler Russert are 16-year-old identical twin brothers who share the same blue eyes, straight hair and love for football. They also share an autism diagnosis. Recent research on twins with autism increasingly links environmental triggers for the disorder.

Study finds that, when offered, many restaurant patrons choose to consume less food and fewer calories.

Sprinting up 86 flights of stairs of the Empire State Building -- even if it's for a worthy cause -- is not everyone's idea of a good time. Especially when there's an elevator nearby. But tonight, more than 650 participants will take the long way up one of New York's most iconic landmarks at this year's Empire State Building Run-Up.

Move over, coffee and Red Bull. A Harvard professor thinks the next big thing will be people inhaling their caffeine from a lipstick-sized tube. Critics say the novel product is not without its risks.

Illinois is basking in its sixth warmest winter in 117 years -- good news for residents who have not had to shovel snow but a red flag for some of the state's most productive businesses: farms.

At least four Balkan nations suspended shipping on the Danube River because of severe frost and the vast amount of ice blocking the heavily traveled waterway.

Organizers of the near-mythical Eleven Cities Tour dealt 16,000 skaters and the nation at large a crushing blow Wednesday when they decided the ice was too thin to hold the 125-mile (200-kilometer) skating marathon for the first time in 15 years.

Hard as it may be to believe if you live in the Northeast or upper Midwest, last January was not the warmest on record across the lower 48 states, federal recordkeepers announced Tuesday.

Much of Europe is still covered in snow and ice, but some areas are already seeing deadly flooding amid concerns that it will get worse before it gets better.

In a vineyard in Moravia, the Arctic chill striking Europe at least has some people jumping with joy.

A new unpublished history of the Afghanistan war details hows American forces, hamstrung by inadequate resources, missed opportunities to stabilize Afghanistan during the early years of the conflict.

Thirty-seven years later, three people face trial on murder charges for what prosecutors say was an ambush triggered by a love triangle around a woman and three Marine buddies.

A U.S. base on Okinawa is the focus of a deepening dispute that is testing Japan's security alliance with the United States and dividing its new government in Tokyo.

A survivor of the suicide bombing on the USS Cole in Yemen 10 years ago has died at his Florida home.

The family of a U.S. soldier captured in eastern Afghanistan pleads for his release after the Taliban releases a video showing the airborne infantryman, who has been held more than five months.

A Mississippi inmate has been put to death for killing two men in a December 1995 robbery spree after courts declined to stop the execution based on arguments that he was mentally ill.

Groupon has surprised Wall Street by failing to make a profit since becoming a publicly-traded company in late 2011.

Experts say American pro-democracy groups are facing increasing hostility overseas, amid claims of meddling and suspicion they are stooges for U.S. intelligence agencies.

A Pakistani militant commander allegedly involved in an attack on a U.S. consulate is believed to have been killed in a drone attack Thursday, officials and sources said.

Bruce Beresford-Redman, the reality television-show producer accused of murdering his wife, Monica, in Cancun in 2010, has been extradited to Mexico.

Is your toilet paper wiping out forests used by tigers, elephants, orangutans and other wildlife? The World Wildlife Fund alleged that a major paper supplier is clearcutting in Indonesia.

Is your toilet paper wiping out forests used by tigers, elephants, orangutans and other wildlife? The World Wildlife Fund alleged that a major paper supplier is clearcutting in Indonesia.

California's Gold Rush was more than a century-and-a-half ago, but its Wild West spirit lives on in a dispute between government agencies and a landowner in the Sierra Nevada foothills.

The melt-off from the world's ice sheets, ice caps and glaciers over eight years of the past decade would have been enough to cover the United States in about 18 inches (46 centimeters) of water, according to new research based on the most-comprehensive analysis of satellite data yet.

Hard as it may be to believe if you live in the Northeast or upper Midwest, last January was not the warmest on record across the lower 48 states, federal recordkeepers announced Tuesday.

Quiet oceans make for calmer right whales, new research suggests. When fewer ships sail the Bay of Fundy, the big baleen whales are less stressed — as evidenced by hormone levels in their poop.

Pakistanis reel in one of the biggest fish in the sea: a whale shark.

Nepal has opened vulture "restaurants" to save the birds from extinction — and at the same time help impoverished villages become self-sufficient.

Freshman Austin Rivers buried a 3-pointer at the horn to give No. 10 Duke an 85-84 win over No. 5 North Carolina on Wednesday night.

Arc: After a blowout loss to Kansas, Baylor is 0-3 against Top 10 teams, which makes it difficult to say with confidence that the Bears have the firepower to make it to the Final Four in New Orleans.

Dwight Howard had 25 points and 24 rebounds, Ryan Anderson scored 27 points and the Orlando Magic hit 17 3-pointers in a 102-89 victory over the Miami Heat on Wednesday night.

What a week it has been for Jeremy Lin.

Derrick Rose gutted it out and started against the struggling New Orleans Hornets only two days after leaving Chicago's previous game with back spasms.

Back on home ice — where they have been unbeatable for three months — the Detroit Red Wings closed in on an NHL record.