The organizers of the OpenWorld are very proud about their investment to save the environment by recycling PET bottles and using dishes made out of paperboard instead of plastic. This is definitely a good beginning, but there are still a lot of other things to do before the conference is really “green”. My proposal is to reduce the power of the air conditioning at the Marriott Marquis conference center. The rooms in the Moscone center are cool, but the ones in Marriott Marquis are really cold. Sitting in a session in this building is similar to a polar expedition. How many kilowatts could be saved by change the temperature to a moderate level?