Offsetters.

To demonstrate the impact global warming will have on our cities, they suspended lifeboats high above downtown streets. Printed on the bottom of the boats was the line "Stop Global Warming" and their client's website, offsetters.ca. Other elements in the stunt included a lifequard blocks up from the water and bus benches with life preservers underneath. Offsetters helps companies and individuals offset their carbon dioxide emissions.

Agency: Rethink Vancouver, Canada.