Fixing Global Warming by 2030 – Grow Food In Greenhouses and Trees on Farmland
by Brian Wang from NextBigFuture.com on (#5NDG3)
The Climate problem we have is about 750 billion tons of excess CO2 in the atmosphere. We have 417 parts per million (ppm) of CO2 versus 285 ppm in 1850 before the industrial revolution. 135 times...
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