The irreversible momentum of clean energy User fwxie, in the Discussion of what can and should be done about climate subreddit, 16 Jan 2017
Obama wrote a paper yesterday. "The irreversible momentum of clean energy" User FireFoxG, in the Climate Skeptics: Trying to see through the alarmism subreddit, 10 Jan 2017
The irreversible momentum of clean energy - Barack Obama User Dash2in1, in the Information about the world's climate subreddit, 09 Jan 2017