New York Times: In Guyana, where pristine rain forest still covers 75 percent of the land, and barely 750,000 people live in a country roughly the size of Britain, a young economist-turned-president is pushing a development model based on conservation that has earned his government international recognition in the United Nations talks on a climate treaty to replace the Kyoto Protocol. Faced with the possibility of climate change, the international community is starting to talk about paying for the …