Our Planet: UNEP Magazine: May 2010 issue

Climate change has been described as the biggest market failure of all time, but loss of biodiversity and of nature’s economically important services must surely be running it close, if not equaling it. Year in and year out, the world economy may be losing $2.5 to $4.5 trillion-worth of natural capital as a result of deforestation alone, quite apart from the cost of the losses of other key ecosystems. For more visit the UNEP website