Last Tuesday, United Nations Secretary General Ban Ki-Moon convened a summit of nearly 100 world leaders to, in his words, "mobilize the political will and vision needed to reach an ambitious agreed outcome based on science at the UN climate talks in Copenhagen.
When I was a kid, my best friend was given an acre of rainforest for her birthday. As exotic as it seemed, the gift really consisted of a piece of paper; a card with a picture of a tree frog and some lushly verdant virgin tropical rainforest in the background.