Reuters: Plans to pay tropical countries to protect forests under a UN pact to fight climate change are flawed and risk alienating voters in rich nations, Britain’s top adviser on forests told Reuters. Clearance of forests to create farmland in developing nations emits about a fifth of the greenhouse gases blamed for climate change. Trees store heat-trapping carbon dioxide as they grow and release it when they rot or are burnt. “I believe there are real flaws in the whole model of …