Green and Galiana examine the state of non-carbon-based energy today – nuclear, wind, solar, geothermal, etc. – and find that, taken together, alternative energy sources would get us less than halfway toward a path of stable carbon emissions by 2050, and only a tiny fraction of the way toward stabilization by 2100. We need many, many times more non-carbon-based energy than is currently produced.
格林与加利亚纳检测了现如今我们使用的非碳源能源的使用状态——核能，风能，太阳能以及地热等等——而她们发现就算把这些能源加在一起，也只能为我们迈向2050年稳步减排目标的努力提供不到一半的帮助，对于2100年的目标更是杯水车薪。我们对非碳源能源的需求要比当今的产量高出许多许多倍。