Many climate scientists say their biggest fear is that warming could melt the Arctic permafrost - which stretches for thousands of miles across Alaska, Canada, and Siberia. — Michael Specter Copy Share Image
Scientists had said, "If you keep burning coal and gas and oil, you will melt the Arctic." And then the Arctic melted just as they had predicted. Did Shell Oil look at the melt and say, "Huh, maybe we should… — Bill McKibben Copy Share Image
