> We need to stop producing CO2 (completely stop) within the next 30+-30 years if we want to limit global warming to ~2 degrees. It could be cool if you could

> We need to stop producing CO2 (completely stop) within the next 30+-30 years if we want to limit global warming to ~2 degrees. It could be cool if you could provide a reference for this statement (both because I don't know what the current best source of such information is and because the climate discussion is entirely dependent on scientific research).