Bloombertg: A draft report prepared for the United Nations suggests, out loud, what the U.S. needs to do about climate change: Cut emissions to one-tenth of current levels, per person, in less than 40 years.
Its perilous to say these things in the U.S., where a mere description of the scale of the climate challenge too often invites ridicule and dismissiveness. Americans are each responsible for about 18 tons of carbon dioxide a year. Taking that down 90 percent would mean a drop in emissions to what they...