Psychologists ply their skills on a range of eco-friendly projects in their own communities.
Burn employed to encourage curbside recycling in her community. In other blocks, the scouts asked people to sign statements of support for the city's recycling program. Some blocks got both approaches. Both interventions increased recycling by 40 to 50 percent, with improvements sustained over months-long surveillance of the recycling bins outside people's houses. I tried to design interventions that were practical enough for municipalities to use on their own without supervision by a psychologist.