Full screenshot reveals this is very old. We used CO2 generators in our greenhouses 30 years ago and still do today. I am glad more people know about this, and it should be reposted often. The green movement is filled with the dumbest morons to ever walk the earth. If they had any sense, they would at least find a gas that hurts the earth. Oh, yea we need all of the gases to survive. woke azzed greenies are just satanists in sheep's clothing.