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The investigation is widening as authorities try to determine if anyone helped the two brothers who are the main suspects in the attack and other crimes that followed.

Fewer Americans are buying cigarettes these days, but smokeless products like e-cigarettes are on the rise. They're not regulated like other tobacco products, but the FDA warns that day may yet come.

Actually, fresh fish doesn't smell "fishy," says Joe Palca. He spent a recent morning watching Hawaii's fishermen sell some 50,000 pounds of catch on the auction floor and sends this postcard.

The House and Senate acted quietly without a vote. Instead, they sent the measure to the president's desk by unanimous consent.

A new strain of bird flu has sickened 82 people and killed 18 in China. But many people who have caught the H7N9 flu say they hadn't been near poultry or other birds. So what's fueling the outbreak of the virus?

The killings of the Kaufman County district attorney and his wife come two months after an assistant district attorney for the same county was shot dead a block from his office. Police say they will "assume" the killings are linked "until it's proven otherwise."

Some pediatricians are worried that babies who spit up are being misdiagnosed with gastroesophageal reflux disease, and that's causing parents to opt for unnecessary prescription medications. Researchers found that using the word "disease" to describe spitting up can have a powerful effect on parents.

Security Council members voted to impose tough new financial and trade restrictions on Pyongyang in hopes of halting its nuclear program.

Presidents from Cuba to Iran took turns standing guard around Chávez's casket. Chávez will not be interred; instead he'll be on display in perpetuity.

The challenge, launching during the SXSW festival Saturday, asks anyone with an Internet connection to try to create a rocket engine. The 3-D designs can be edited by users around the globe, a model the organizers hope will decrease the cost of space innovation and unleash "untapped potential around the world."