"Hansen offered three scenarios for future warming. “Scenario A,” was business as
usual.......“Scenario B,” which forecast a slower increase, is pretty close to what has happened, as far as global carbon dioxide emissions go. It projected that increasing CO2 concentrations would result in global temperatures about 1.48°F above the 1951-80 average in 2007. But that’s 33 percent more warming than has actually been observed......Scenario C” stopped the growth of carbon dioxide emissions altogether in 2000, which obviously hasn’t happened.

"Every climate scientist knows there’s been no — zero — net change in surface temperatures in the last ten years, as shown in the climate history of the United Nations Intergovernmental Panel on Climate Change....Hansen’s
predictions were wrong about the extent of global warming. Yet on the 20th anniv. of his testimony, he said that people “should be tried for high crimes against humanity and nature” for spreading doubts.