Elizabeth Kolbert on What Happens "When the Arctic Melts"

As the Greenland ice sheet melts, more freshwater is pouring into the oceans and that’s triggering feedback loops that could mean disastrous coastal sea level rise and drought. New Yorker staff writer Elizabeth Kolbert reported from the summit of the Greenland ice sheet for her new piece, “When the Arctic Melts.” “If we cross the tipping point for the Greenland ice sheet,” she writes, “we may not even notice. And yet the world as we know it will be gone.” Kolbert joins us.