April 10, 2015 3:15 pm The Perfect Burger Takes 40 Days The 40 day dry-aged burger is like a steak on a bun. Get a taste at David Burke’s Primehouse in Chicago. US & World Videos 1:36 Arizona Senate repeals 1864 abortion ban 1:40 Democrats say Big Oil misled public for decades about climate change 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look