Find out why President Obama 's trip to Afghanistan did n't go as planned . Hear how tariffs would be affected by a U.S.-South Korea trade agreement . Consider how a social experiment challenges one school district to unplug . MARA HARRIS , Score: 6
Find out why President Obama 's trip to Afghanistan did n't go as planned . Hear how tariffs would be affected by a U.S.-South Korea trade agreement . Consider how a social experiment challenges one school district to unplug . Score: 6