From high costs, to heavy traffic, to lagging safety regulations, cars have become a 'quality-of-life problem in many cities,' writes guest blogger Greg Michener.
As solar power becomes more affordable and efficient, it could spread in Africa, much in the way cell phones took over without widespread infrastructure, writes guest blogger Alex Thurston.
President Abdoulaye Wade will face Macky Sall in a runoff this month. Sall is already appealing to former candidates for endorsements.
A nonprofit is cranking up production of Nourimanba, a nutritious peanut-based paste, in Haiti, where as many as 300,000 children face malnutrition.
Al Qaeda militants attacked several military bases in Yemen, killing hundreds and presenting an early challenge for the new government of Abed Rabbo Mansour Hadi.