If you’re traveling to Washington, D.C., for the April 29th People’s Climate March from Greater Boston, you can now offset the carbon footprint of your travel through a GreenCambridge program that will provide education and support local urban trees, plants and climate through the purchase of biochar.
About Biochar (from the International Biochar Initiative)
The 2,000 year-old practice of making biochar converts agricultural waste into a soil enhancer that can hold carbon, boost food security, and increase soil biodiversity, and discourage deforestation. The process creates a fine-grained, highly porous charcoal that helps soils retain nutrients and water.
Cambridge Outdoors 
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