South Africa

Mandela remains hospitalized, but South Africans take the opportunity to honor the man who symbolized the anti-apartheid movement.

The recommended change would mean that patients would begin treatment before they get extremely sick. In Africa, where millions of people are infected with HIV, a move to earlier treatment would be challenging for the public health system.

Demand for rhino horn, used in traditional Chinese medicine, is fueling a slaughter of the animals in Africa. In Vietnam, the sought-after commodity is fetching prices as high as $1,400 an ounce, or about the price of gold. There, some believe ground horn can cure everything from hangovers to cancer.

Treating people for HIV isn't just beneficial for those infected but also helps the entire community. Two studies show that where HIV drugs are widely available, the risk for new HIV infections drops dramatically and overall life expectancy increases by more than a decade.