"The Obama administration has enacted important reforms to prevent a Great Depression, reform health care, overhaul the financial system and education, and craft important breakthroughs with Iran and Cuba. But climate change occupies a category of its own. The damage from climate change is irreversible. Melted glaciers cannot be easily refrozen; extinct species cannot be reborn; flooded coastal cities are unlikely to be rebuilt. Action to mitigate climate change has an urgency nothing else can match."
Jonathan Chait in New York reacts to the Paris climate agreement.