(The Root) — No visit to Kenya is complete without calling on Sarah Obama, President Obama’s remarkably sharp 90-year-old step-grandmother, the woman who raised his father, Barack Obama Sr. Since the 2008 U.S. presidential campaign, Westerners have trooped to her door, eager to learn about the president’s African heritage from the woman he calls “Granny.”…

(The Root) — World AIDS Day is approaching, and it’s time, once again, for an accounting. In the roughly 30 years since the disease was recognized, more than 25 million (pdf) have died from it. An estimated 34 million (pdf) are living with it; 2.5 million new infections are recorded each year. There has been…