Even though the models are fudged and the science is riddled with fraud, should we spend the 45000 billion dollars "just in case"?

Tough climate goals cost $45 trillion by 2050: IEA | Environment | Reuters

BONN (Reuters) - A goal to halve planet-warming carbon emissions by 2050, similar to an aim Japan is urging G8 leaders to agree next month, would add $45 trillion to global energy bills, the International Energy Agency said on Tuesday.

"It's a lot of money," IEA analyst Peter Taylor told a meeting on the fringes of a climate conference in Germany, previewing the agency's Energy Technology Perspectives report to be published in Japan on Friday.

"It implies a completely different energy system," he said.