IMHO, the human race is not qualified to debate this topic. To think at this point in human history we understand this planet, or the broader universe, with any degree of certainty is pure arrogance. Theories, built upon other theories built upon refutable data. There are no "facts" - we are continually making new discoveries that question or debunk theories that were generally accepted as fact. There is good circumstantial evidence that make both sides of this argument viable - but since there is no smoking gun, the debate becomes philosophical. And we all know philosophical debates can last for millenia, i.e. religion, politics, economics, etc. It is human nature to jump on one bandwagon, or another - everyone needs a "cause" to give their life meaning.
But at the end of the day it won't matter anyway - if we are truly in a warming cycle, whether or not, it is caused or accelerated by man - we will still wait until we are on the brink of catastrophe before any real efforts are made. Human nature is the one constant in all of this - we like to repeat history over and over.
While this debate rages on and creates all kinds of political and economic headaches, with no real change, and both sides saying "I told you so" with every little event that appears to support their cause (smacks of credit and blame for our economic cycles) we will probably get hit by an asteroid, or volcanic eruption, or some natural, biological, menace that will be a true, immediate, catastrophic event. But of course, in all of our greatness, we think we are up to the task to prevent that as well - just like we can keep water out of New Orleans or keep buildings in San Francisco from crumbling during a big earthquake
Most likely, the actual "solution" will be to adapt as changes occur. It will be a geo-political and economic mess - but we will survive, although Darwin may come into play to some degree. The northern hemisphere will gain some new residents as the coastlines disappear and new deserts appear - I'm sure migrations like that have happened in the past as well. This is when we will see the real genius of the human race arise - we always find a way forward when we are backed into a corner.
The notion that we will be able to preserve the current geo-political status by influencing nature is just another example of human arrogance and denial. We will adapt to the changing world around us, not adapt the world to our needs - although the current smartest and brightest will continue to try - in true Don Quixote style....
Sorry, just another philosophical perspective from someone that isn't even remotely qualified to debate that facts.....