December 20, 2012 1:30 pm 2012 in Ninety Seconds From the Costa Concordia disaster, Petraeus scandal and movie theater massacre to President Obama’s re-election, Kate’s baby news and “Gangnam Style,” here’s a look at the biggest stories of the year in 90 seconds. Local 1:36 Arizona Senate repeals 1864 abortion ban 1:40 Democrats say Big Oil misled public for decades about climate change 3:08 Mom describes ‘gut-wrenching' feeling of active shooter reports at daughter's Wisconsin school 1:45 NYPD enters Columbia University in riot gear to clear protest 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look