"Using Nordhaus’s model assumptions, if the World as a whole fulfilled the Paris Climate Agreement collectively with optimal policies, then the world would be worse off than if it did nothing. That is due to most countries pursuing little or no actual climate mitigation policies. Within this context, pursuing any costly climate mitigation policies will make a country worse off than doing nothing. Assuming political leaders have the best interests of their country at heart, and regardless of whether they regard climate change a problem, the optimal policy strategy is to impose as little costly policy as possible for maximum appearance of being virtuous, whilst doing the upmost to get other countries to pursue costly mitigation policies."
Novelist Michael Crichton, in the Caltech Michelin lecture in 1993, offered what some might see as a calming reassurance about the future of the earths’ climate. He looked back to the turn of the last century when people, "didn't know what radio was, or an airport, or a movie, or a television, or a computer, or a cell phone, or a jet, an antibiotic, a rocket, a satellite, an MRI, ICU, IUD, or what IBM was...”
Crichton went on, presenting a long list of the scientific inventions of the 20th century that changed human life for the better. Toward the end of the lecture he asked, "Now, you tell me you can predict the world of 2100?"
Climatologist Dr. John Christy: 'I take a real hard look at climate model output and can demonstrate that these models are just too sensitive to carbon dioxide," he said. "The real world is not spiraling off into some dangerous territory of climate.'
"I actually did a very detailed analysis of that for the United States,” he said. “What I found is that in the last 124 years, weather extremes and temperature extremes have actually declined, both record high temperatures and record low temperatures."
Even if all the Green New Deal’s goals were achieved, it would have a negligible, and likely immeasurable, impact on projected global warming, according to climate model simulation provided by a libertarian think tank.
“I seriously think the effect would — at best — be barely detectable in the climate record,” Patrick Michaels, a climatologist with the Cato Institute, told The Daily Caller News Foundation. “The year-to-year variation is very close to the total amount of warming that would be ‘saved’ by 2100, according to EPA’s own model,” Michaels said.