Trees! with One Tree Pledge and Michael Ziman

One Tree One Tree Pledge is a commitment to help offset the carbon emissions of the homes or buildings we occupy. Home dwellers pledge to plant one tree for every square foot of their home or apartment. Builders/Construction Companies pledge to plant one tree for every square foot of new structures built. Our planting partner, One Tree Planted, plants trees at a cost of only $1 per tree. The trees planted will help sequester carbon to mitigate the carbon emitted from buildings.

http://onetreepledge.org/

Americanforests.org