Either they are really behind in Germany or there's something fishy about this article. We've known for decades that CO2 is beneficial for plants. Aquarists who maintain planted tanks pump CO2 into the water to keep the plants alive. If a hobbyist knows this then why is a German scientist just now figuring it out?The answer: CO2 is good for plants, plants feed people, well fed people are happy and prosperous, liberals are out of a job...
Higher CO2 levels may be good for plants
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