The U.S. Environmental Protection Agency forecasts the "social cost of carbon" (SCC) in the year 2020 to run anywhere from $13 to $137 per metric ton. That's EPA's measure of the harm each ton of "carbon" (really carbon dioxide, but who cares with our ill-educated public that doesn't know the difference between an element and a compound---especially when the shorthand serves the purpose of scaring people needlessly?) emitted into the atmosphere. Its estimates are based on a … [Read more...]