Nicholas Stern is a former World Bank economist commissioned by the UK Government to evaluate the economic costs of climate change. In a closed door briefing to world leaders at a climate change summit in Mexico, he warned yesterday that the costs of combatting global warming are manageable.
However, the longer we wait to take action, the more difficult it will be. What's more, the cost of environmental impacts from doing nothing will rise even faster.
The full Stern Report is due to be published here in a few days.