Mr. Rossiter ... an American University adjunct professor of math and statistics, argued that the computer modeling used to support claims that the earth is headed for a climate catastrophe is far from definitive. But more important from a moral point of view, he wrote that limiting fossil fuels would make it harder for Africa to escape poverty.
If continued global warming might (or will) destroy the foundations of our human world, it becomes obvious that eliminating poverty within that human world is not a justification for continuing to destroy the World of Nature. We need to address poverty another way. There is nothing "moral" about destroying the World of Nature to solve a human problem. In fact, it's a misguided attempt.
(2) - http://earthobservatory.nasa.gov/IOTD/view.php?id=885