The organizers could put up posters comparing the amount of CO2 emitted by the "Burning Man" to the amount produced by an intercontinental flight, or with the n

The organizers could put up posters comparing the amount of CO2 emitted by the "Burning Man" to the amount produced by an intercontinental flight, or with the number of "Burning Man equivalents" that are burnt each day in the Amazon rainforest - that would probably be an eye-opener for some.