Until moronic thoughts. Now where were the coastal cities, where were the hundreds of millions of displaced humans who will be screaming for blood (and they will get it). It does not matter the cause, we are forced to attempt to control climate change, regardless. Go back further moron and the earth was a cloud of dust waiting to form into a planet how about it's climate then, huh, what about climate during the early earth (http://en.wikipedia.org/wiki/Hadean), huh, what about climate when the sun expands (http://en.wikipedia.org/wiki/Future_of_the_Earth), huh, seriously, piss off with that stupid shit.
We have what we have now and we have to deal with what we have now and we need to protect 'HUMAN' coastal environs and the hundreds of millions of people who live there.
What the experts now fear is the methane surge, quite a major catastrophic climate event. sure averages over the century are going to rise slowly but that methane surge could be seriously catastrophic for a short period within that longer term. Forget 1 degree a huge global surge far higher than forecast, as not only existing methane is released into the atmosphere but more is generated by a broken down ecology rotting in the heat.
The methane will break down and the impact will be short lived (years) and the planet will settle to more expected temperature levels but the damage in the interim will be enormous. It is all kind of funny and sad, it will happen and no amount of lies will stop in from happening, they just prevent efforts being taken to minimise the impact. The consequences for those who participated in the lies will not be pretty, crimes against humanity always ends up with harsh punishments.