The last IPCC report also included a table debunking many worries about “tipping points” to abrupt climate change. For example, it says a sudden methane release from the ocean, or a slowdown of the Gulf Stream, are “very unlikely” and that a collapse of the West Antarctic or Greenland ice sheets during this century is “exceptionally unlikely.”
If sensitivity is low and climate change continues at the same rate as it has over the past 50 years, then dangerous warming—usually defined as starting at 2 degrees C above preindustrial levels—is about a century away. So we do not need to rush into subsidizing inefficient and land-hungry technologies, such as wind and solar or risk depriving poor people access to the beneficial effects of cheap electricity via fossil fuels.
As the upcoming Paris climate conference shows, the world is awash with plans, promises and policies to tackle climate change. But they are having little effect. Ten years ago the world derived 87 percent of its primary energy from fossil fuels; today, according the widely respected BP statistical review of world energy, the figure is still 87 percent. The decline in nuclear power has been matched by the rise in renewables but the proportion coming from wind and solar is still only 1 percent.