The [[Intergovernmental Panel on Climate Change]] produced a report for the [[International Energy Agency]] (IEA) which states that the price for reducing human C0<sup>2</sup> 50% by the year 2050 will cost an estimated $45 trillion dollars or ''1.1 per cent of average annual global [[GDP]]''.<ref>[http://www.businessgreen.com/business-green/news/2218500/iea-calls-trillion-energy], Businessgreen.com, IEA calls for $45 trillion energy "revolution", June 6, 2008</ref> | The [[Intergovernmental Panel on Climate Change]] produced a report for the [[International Energy Agency]] (IEA) which states that the price for reducing human C0<sup>2</sup> 50% by the year 2050 will cost an estimated $45 trillion dollars or ''1.1 per cent of average annual global [[GDP]]''.<ref>[http://www.businessgreen.com/business-green/news/2218500/iea-calls-trillion-energy], Businessgreen.com, IEA calls for $45 trillion energy "revolution", June 6, 2008</ref> |