We cannot understand the effect of CO2 on climate change, and it is folly to attempt to regulate it, if we do not know all the sources and sinks of CO2. The USA launched a satellite to study the issue -- a satellite which failed to reach orbit. Canada already has a functioning satellite to try to find answers to this essential question.
"The problem is that where carbon dioxide comes from, and where it is sucked out of the atmosphere, remains poorly understood.
"Clearly, if we're going to do something about climate change, we need to understand where CO2 is produced and particularly where it's absorbed.That's much less clear,' Quine said." [Ben Quine, the director of space engineering at York University]