Time for Chicago's vending machines to chip up or chip out.

Mayor Rahm Emanuel said Wednesday he's cracking down on the caloric content of vending machines in city buildings and plans to replace them all with healthy vending by next year.

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The announcement comes on the same day as the Chicago Public Schools board unanimously approved a new healthy snack and beverage policy which bans pop, sports drinks and energy drinks as well as whole milk during school hours.