The only problem is, man-made climate change is a hoax and is more a religion than science. Although, this hemp system may reduce the amount of carbon dioxide, it wouldn't actually solve any problem.
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If you think the temperature has been going up. Wrong. The Hockey stick graph is bad science.
http://nov79.com/gbwm/trees.html
In this video a Nobel Laureate points out the measured temperature changes are basically natural randomness (AKA weather).
RE: Hemp, and Lots of It, Could Be One Climate Solution