The Paris Accord will cost trillions of dollars over decades and according to an MIT Study published in April 2016 it states that, "if countries upheld their commitments, the pact would slow the global temperature rise to between 0.6 degree and 1.1 degrees Celsius by 2100."  Trillions of dollars and we don't decrease the rise in temperature, just slow the rise.  And what if the temperatures are falling in 2100 and the concern is that we're entering a new Ice Age?  All these studies should have a disclaimer like they have with investments.  "Past performance is no indication of future results."

Trillions of dollars for a minor decrease in the rise of the world's temperature?  Sounds like the rail where we spend billions of dollars to reduce traffic by 2%.  AUWE!