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Troops loyal to President Bashar Assad reportedly executed nearly 30 young men in one incident. In the city of Homs, two journalists reportedly died when the building they were in was hit by shells.

The commander of NATO forces in Afghanistan has apologized. But the anger remains.

Mitt Romney has cut deeply into the substantial lead Rick Santorum held earlier this month. Romney's campaign and superPAC are flooding the airwaves with attacks on Rick Santorum.

Advertisers collect information with every digital move people make. They then target ads based on that information. Communications scholar Joseph Turow worries that advertisers will use such data to discriminate against people and put them into "reputation silos."

Psychiatrists have long claimed that gardens hold healing powers for mental illness. Now, scientists are exploring a new field called horticultural therapy for everyone from troubled youth to veterans. But just how gardens affect the brain remains mainly a mystery.

The U.S. has used military force to help oust three dictatorial regimes since 2001. But other autocrats have good relations with the U.S., and some even get the red-carpet treatment. What factors account for the different responses around the world?

The U.S. Food and Drug Administration's decision to block imports of Brazilian orange juice for the next 18 months could drive wholesale prices of concentrated orange juice up by 20 to 45 percent. The industry agrees that higher prices are indeed likely because orange juice already is in short supply.

These days, visiting Tibetan areas is a risky venture for journalists trying to cover the protest movement against Chinese rule, including a rash of self-immolations. But the dangers are far greater for those who talk to them. NPR's Louisa Lim recently traveled there and describes the challenges.

The mailings follow letters to comedians Stephen Colbert and Jon Stewart that warned of the mailings.

The U.S. Food and Drug Administration has questions about the safety and legality of AeroShot, the inhalable caffeine product released last month. So does the American Academy of Pediatrics.