As part of a series on hashtag activism in 2014, Audie Cornish speaks with Obiageli Ezekwesili of the Open Society Foundation. Ezekwesili was one of the early promoters of the hashtag #bringbackourgirls, about schoolgirls kidnapped in Nigeria in April.
Jordan says one of its pilots was captured by the self-titled Islamic State in Syria. The plane crashed while the pilot was conducting airstrikes against the militants. The U.S. military is trying to determine the cause of the crash.