Human had been warned. A little-known chemist once said that "...Keep pumping carbon dioxide into the air the way humanity had been doing since the industrial era, and you can double the level of heat-trapping gas in the atmosphere, raising the temperature dramatically." Once, the climate begins to change, it leads to the domino effect of shift of deserts and fertile regions and tropical storms, etc.
What can politicians, law-makers, profit companies, scientists and all of the rest of us do? We need to put away all the acrimny and uncertainty. Initiative matters.
"Our feverish planet badly needs a cure." quot from the Time magazine. Human had not taken the problem seriously. It is not a surprise that people face this magnitude of desperation, they yield to "the impluse to lay blame". The sources of the hierarchial debate role spreads from government politicians, industries of all kind, specific nations to drivers. Never should we mind who cause the problem and when it started, its significant enormity brings the reason that all left with "finger prints" will be responsible to reverse this devastation of catastrophe.
Nevertheless, it is sarrowful. "We had the leisure of beginning our long industrial ambition for the quality of living of current generation, but we do not have the leisure of waiting to clean up the mess for the coming generation."