The southern African nation of Botswana has one of the highest rates of HIV in the world. Nearly 25 percent of all adults in the country are infected with the virus. Only the nearby kingdom of Swaziland has a higher rate.
But Botswana is also remarkable for its response to the epidemic. It has one of the most comprehensive and effective HIV treatment programs in Africa. Transmission of HIV from infected mothers to their fetuses and newborn babies has been brought down to just 4 percent.
In Washington, D.C., the glittering marble of public buildings and monuments can conceal the darkest of deeds. And in the crime novels of Mike Lawson, they do.
"When I started writing, the very first decision I made was, I wanted the book set in D.C.," says Lawson, who recently published his seventh Washington-based thriller, House Blood. "That was before I had a character, or anything else."
Researchers are studying the ability of beneficial micro-organisms - or probiotics - to treat a range of conditions from eczema to inflammatory bowel disease. And the idea that "good" bacteria are healthy for us is gaining traction.
Syrian activist Karam Nachar is pursuing a doctorate in Middle Eastern history at Princeton. His family is working on several fronts against the Syrian regime. His father, who has been jailed previously, helped form the Syrian National Council, an organization of dissidents.
The Nachar family has long been on the radar of the Syrian government, and since last year, they have become even more visible.
When Syrians first started openly protesting inside the country in the spring of 2011, 29-year-old Syrian Karam Nachar was working on his doctorate in Middle East history at Princeton University. He joined demonstrations outside U.N. headquarters in New York.