The latest computer modeling I've seen indicates that at mid-century, there might be 150 million people classified as "environmental refugees."
Bill McKibbenIn the scientific community, the debate is over, for all intents and purposes, about whether or not the planet is heating and who is causing it. In fact, it's more or less been over since 1995.
Bill McKibbenIf one wanted to stigmaitise, that's how one would do it - lots and lots of people saying "we're severing our ties".
Bill McKibbenThere is no real scientific debate over what is happening; of course there is debate over exactly how it is going to play out in the decades ahead, because this is a large experiment that we haven't done before, and no one knows precisely how one can ever precisely predict what effects this heat will have. But all the science in the last few years, or almost all of it, really serves to show that the effects are larger and more rapid than we had thought even a decade ago.
Bill McKibben