They're a bad joke. The main problems are: 1) Reluctance to recognize the tipping point has come and gone. Global temperatures will continue a steady rise for

They're a bad joke. The main problems are: 1) Reluctance to recognize the tipping point has come and gone. Global temperatures will continue a steady rise for the next 100 years even if the energy system is completely defossilized within a decade, which is not going to happen. At best, rates can be slowed by eliminating fossil fuels within 3-5 decades, but even then the natural feedbacks will continue for decades if not centuries. Pliocene, here we come. 2) Failure to propose any plan for cutting fossil fuel production, instead focusing on the emissions, which opens the door to bogus claims like fossil carbon dioxide sequestration. That's because fossil fuel producers control the process, and don't want to see something like a 2-3% reduction in fossil fuel production per year, matched by an equivalent production of renewable tech. 3) Refusal to accept the huge costs required to move from fossil fuels to renewables, as well as the huge costs required to adapt to the ongoing warming, sea level rise, drought and flooding. It would require a redirection of the majority of each nation's GDP to infrastructure development, PV factory production, etc. Fundamentally, the economic system adopted by fossil fuel producers (primarily investment capitalism) is incapable of the kind of long-term planning needed to deal with the problem. China is ahead of the curve on that (notably, China has no oil and gas reserves), not that many in the western world want to admit it.