Photos: (Getty Images) It's happening! The Global Citizen Festival Concert is going on right now in Central Park, and if you're not able to attend, we've got live streaming! Your computer screen = front row pass at all the action. Why is this so important? The Global Poverty Project is using this concert to help fight poverty by mobilizing legions of do-gooders and by bringing in financial help. There are going to be awesome performances from K'NAAN, Band Of Horses, The Black Keys, and the Foo Fighters, so this isn't something to miss! Some...