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Back in 2002, news that acrylamide, a carcinogen in animals, had been found in some foods set off a bit of a panic. Now the FDA has issued a new warning on the chemical in food. But here's the puzzler: In the years since that first scare, the human studies haven't really backed those initial concerns about cancer.

President Hamid Karzai has called together this "grand assembly" of Afghan elders and community leaders to help decide the future role of the U.S. military in the war-ravaged country.

For the first time, three women were among the Marines who graduated Thursday from the two-month combat training course. The U.S. lifted the ban on women in combat earlier this year. Now, the Marines are conducting tests to see if women have what it takes to actually serve in the infantry.

Seven EU countries said they would form a club to produce military drones. The European project would join drones made by the U.S., Israel and more recently China.

Citing gains among veterans and the chronically homeless, a large government study reports continued progress. But nearly 20 percent of homeless people were in either New York City or Los Angeles, according to the Department of Housing and Urban Development. And several states also saw an increase.

In a small study, Harvard researchers found that getting food stamps didn't help low-income individuals as much as they expected. Despite their food aid, researchers say the people they surveyed weren't getting a complete, nutritious diet.

B. Todd Jones is in charge of a bureau whose relevance and performance are being questioned and whose resource problems appear to be growing larger. He's trying to put the Bureau of Alcohol, Tobacco, Firearms and Explosives back on solid footing after years of controversy and criticism.

By putting light sensors inside a giant ice cube that's a mile beneath the South Pole, scientists detected 28 neutrinos from beyond the solar system. It's just a start – but researchers hope the work could eventually yield a way to see through debris clouds to the core of exploding stars.

"This little baby — what my wife used to call my 'pretend money project' — is really going mainstream," says the chief scientist at the Bitcoin Foundation.

A few short years ago, Simon Gratz in North Philadelphia was among the state's most troubled, violent and academically underachieving high schools. Today, now a charter school, Gratz is very much on the rebound. But critics say Philadelphia can't charter its way out of its school crisis.