In this blogpost:

I found the (uncomplete) official list of current tasks:

"Pundits who insist that global collapse can still be avoided, must explain to us in detail just exactly how this can be achieved given our current circumstances. When challenged on specifics, those cornucopians paint vague unrealistic pictures of magical sudden worldwide cessation of industrial/agricultural emissions (which magically does not result in economic collapse, food shortage and dieoff), magical cessation of conflicts, voluntary population stabilisation then decline to a steady state, equitable global distribution of resources, discovery of unlimited unpolluting energy and free movement of all refugees, welcomed without restriction into all the richer countries. Furthermore the environment magically repairs itself despite having 10 billion people consuming tremendous global resources by mid century. Yeah, right."

I do not really need to add something. The question only remains: where do we start and when ?