A new report conducted and published by Even Mills, PhD, a respected and long time energy analyst along with Staff Scientists at the Lawrence Berkley National Laboratory has concluded that Americans spend an amazing 1% of the entire national electricity consumption, or the equivalent of the output of seven large power plants on growing cannabis. Since medical marijuana use has become so much more popular, and most of those states do not have a dispensary program, many more people are learning to grow marijuana indoors.
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The Carbon Footprint of Cannabis
Contact your elected representatives and urge them to 'Stop Arresting Marijuana Smokers'. 
[...] 10. The Carbon Footprint of Cannabis [...]
[...] 10. The Carbon Footprint of Cannabis [...]
Just cause you want to go green don’t mean your a tree hugger.