Colin Beavan, "No Impact Man", and his wife and daughter have become true conservationists. For 10 months now they have been living in their New York City apartment without electricity and haven't bought anything new -- even toilet paper. Beavan even built a tricycle out of recycled goods so he can cart around his small family around the city.
Related links:
Tricycling for a Good Cause (ABC News)
Beavan's web page
Beavan's blog