A rise of 5C would be a temperature the world has not seen for 30 to 50 million years. We've been around only 100,000 years as human beings. We don't know what that's like.
Nicholas SternUnfortunately, the current pace of progress is not nearly rapid enough, with many rich industrialised countries being slow to make the transition to cleaner and more efficient forms of economic growth.
Nicholas SternThis [climate change] is potentially so dangerous that we have to act strongly. Do we want to play Russian roulette with two bullets or one?
Nicholas SternAdaptation can efficiently reduce the costs of climate change while atmospheric concentrations of greenhouse gases are being stabilised
Nicholas Stern