CO2 output must cease altogether, studies warn

When it comes to deciding how drastically to reduce greenhouse gas emissions, O'Neill said, "in the end, this is a value judgment, it's not a scientific question." The idea of shifting to a carbon-free society, he added, "appears to be technically feasible. The question is whether it's politically feasible or economically feasible."

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Translation:
The idea of maintaining this world (the only world proven to have life on it) in a livable condition appears to be technically feasible. The question is whether it's politically feasible or economically feasible.

Actually it IS a scientific question, and we don't really have a whole lotta time left to answer it. That guy must not have any children or grandchildren.