ENCORE: Cooking without gas: Why cities are cutting methane from homes

Some municipalities are taking natural gas out of buildings in a shift to a greener future. Laura Lynch checks in on two towns on either side of Lake Ontario, both leading the way. And: what's the deal with 'renewable natural gas'? Some companies promise 'renewable' natural gas from landfill and other waste can slash emissions. But is there enough trash to power a fuel switch, or is it simply a distraction from better solutions?