The majority of the nearly 50,000 celebrants at the Burning Man counter-culture event have been re-adjusting for two weeks to the real world of running water, cubicles and commutes. With the week-long party in the Nevada desert in the rearview mirror, how green was the burn?

Supporters and critics of the festival of radical self-expression anticipated that this year's Green Man theme would set the ephemeral city apart from those of the past. Many hoped that Burning Man would clean up its act, show off promising clean technologies and set a fresh example for eco-friendly events. Others accused festival planners of hypocrisy, pandering to the green chic trend and corporate interests by inviting green tech companies to participate.