Climate Change: We are the Problem

Most countries are trying to slow climate change by handicapping their economies with a carbon tax.  The desired effect of the carbon tax is probably minuscule and I am sure somebody is profiting from the effort. Unfortunately, the greatest contributor to climate change is probably over-population.  For economic reasons most countries want to increase their populations not decrease them.  We are the problem. Does anybody have a solution?  How about a tax for anybody that has more than 2 children?