A farmer harvests corn on a farm near Spring Mills, Pa. According to current biofuel laws, if you burn ethanol from corn in your car, the government doesn't count the carbon dioxide that comes out of the tailpipe as an actual carbon emission.
Aby Ba (left) and Ousmane Mactar Ba play the board game Jekaben, which was created by their father, Senegalese entrepreneur Salif Tidiane Ba, in Dakar, Senegal. Jekaben, which means "let's unite and work together" in a local language, celebrates the idea of Pan-African unity.
Idy Sy for NPR