This PSA makes people think about how much crap we pump into the air, using a creative, simple metaphor so everyone can understand how much harm we're doing to the atmosphere and environment.
Link: http://current.com/items/87610321_ecospot_grand_prize_winner_sky_is_falling
Link: http://current.com/items/87610321_ecospot_grand_prize_winner_sky_is_falling