"Donald Trump Once Backed Urgent Climate Action. Wait, What?"

"As negotiators headed to Copenhagen in December 2009 to forge a global climate pact, concerned U.S. business leaders and liberal luminaries took out a full-page ad in the New York Times calling for aggressive climate action. In an open letter to President Obama and the U.S. Congress, they declared: 'If we fail to act now, it is scientifically irrefutable that there will be catastrophic and irreversible consequences for humanity and our planet.'

One of the signatories of that letter: Donald Trump.

Also signed by Trump’s three adult children, the letter called for passage of U.S. climate legislation, investment in the clean energy economy, and leadership to inspire the rest of the world to join the fight against climate change."

Ben Adler and Rebecca Leber report for Grist June 8, 2016.