Is There a '9/11 Generation?'

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Ten years after the attacks in New York, Washington and Pennsylvania, is there a "9/11 Generation?" Was it a defining experience for young Americans and for youth in the Arab Middle East? Also, poor jobs numbers increase political pressure on the President and Congress. On Reporter's Notebook, so many objects in low-Earth orbit are crashing into each other, they’re multiplying, creating a "tipping point" for space travel and unmanned satellites. What can be done?

Banner image: Kevin Van Orden, whose brother is in the US Army, celebrates outside the World Trade Center site after the death of accused 9/11 mastermind Osama bin Laden was announced May 2, 2011 in New York City. Photo by Mario Tama/Getty Images