A Climate Action Centre primer

The following quotes are from Page 9 of http://fisnua.com/wp-content/uploads/2011/03/4-degrees-hotter.pdf

"Earlier, in March 2009, at the Copenhagen science conference, Professor Hans Joachim Schellnhuber, director of the Potsdam Institute, and one of Europe’s most eminent climate scientists, told his audience that at 4C, population “... carrying capacity estimates (are) below 1 billion people.”

"Professor Kevin Anderson, director of the Tyndall Centre for Climate Change, believes only around 10 per cent of the planet’s population – around half a billion people – will survive if global temperatures rise by 4C... "

"Three years earlier, in 2006, James Lovelock — scientist extraordinaire, inventor of the microwave oven and propounder of the Gaia thesis — told an audience that the Earth has a fever that could boost temperatures by up to 8C (more on this later), making large parts of the surface uninhabitable and threatening billions of peoples’ lives. He said a traumatised Earth might only be able to support less than a tenth of its six billion people: “We are not all doomed. An awful lot of people will die, but I don’t see the species dying out... A hot Earth couldn’t support much over 500 million.”