There is no "if it's real", even Exxon knew it was real in the 1980's. Then they went on a campaign to cover it up (deny it was real). The science is good and the problem is rapidly escalating CO2 levels. This is not difficult to grasp. When big oil money interests discovered what a threat this was to their income/net worth, they even got a hack journalist to confuse the issue by trying to create a global cooling scare. Yes, global warming sounds much more palatable, doesn't it? And deniers are still citing this one bogus article, unsupported by science, created to confuse the issue, to claim scientists don't know what they're talking about.
But that is no reason to throw our hands in the air and give up. The carrying capacity of planet earth is many times what we have now and is highly dependent upon how we use our knowledge to live high quality but low impact lives. And the point remains, the most pressing issue of our day is climate change which has the potential to reduce the carrying capacity of planet earth to below what it is today.
So what? The point is that new technologies can be implemented to reduce the impact of each life by a factor of 10 or more compared to the typical human footprint from 1990.
LOL! We all do and that is the point!
BTW, I'm childless by choice but support everyones right to bear children. We evolved to live on this wonderful planet and have a right to live and reproduce. But, as a society, we have a responsibility to future generations to be good stewards and leave them a habitable planet. And I would argue it should not just be habitable but it should be as wonderful as we are capable of leaving. There simply is no reason to selfishly s*** in the nest when we know better.