Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions. — James Hansen Copy Share Image
“I write these words in May of 2011, the week after a huge outbreak of tornadoes killed hundreds across the American South; it was the second recent wave of twisters of unprecedented size and intensity. In Texas, a drought worse… — Bill McKibben Copy Share Image
