Doug alludes to wondering what's happening about this global warming, during a cold weather phase, forcing Arthur to move to the room across from their bedroom,on the second floor. Which is basically one of the first times that this geo-political/ environmental catch phrase is mentioned in main stream sit-com media.
When Doug and Carrie wake up on on the "balmy" morning, the alarm clock news anchor says the radio station is "WCBS". CBS is the broadcasting company that first aired the show.