2014/05/13 Headlines: U.S. Flies Surveillance Planes over Nigeria to Search for Missing Girls; Nigeria Rejects Prisoner Swap with Boko Haram; Separatists Declare Autonomy in Eastern Ukraine; Studies: Global Warming Helps Cause Irreversible Melting of Antarctic Glaciers; Senate GOP Blocks Bipartisan Energy Efficiency Bill; 150 Same-Sex Couples Wed in Arkansas; Texas to Carry Out 1st Execution Since Botched Killing in Oklahoma; Obama Admin Offers Senators Expanded Access to Assassination Memos; New York City Council Members Seek Leniency for Cecily McMillan; IMF Chief Cancels Smith College Commencement Address After Protest; Democratic Candidate in North Carolina Primary Dies at Home