The article doesn't say that CO2 is released into space It says CO2 is in the upper atmosphere because of increased levels of CO2, by humans
To your other point, of course we need some amount of CO2 in the atmosphere. Who is saying we don't? The problem is that we have drastically
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Increased the level of CO2 & other greenhouse gases faster than it can be re-absorbency which is leading to higher net temperatures.
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