In 1987 NASA's James Hansen, one of the folks credited with starting the global warming scare, predicted the world would be 3 C warmer by 2020. Reality: average temperature was only 0.44 C higher.
In 2013 it was predicted that Arctic summers may be ice free by 2020. Reality: The prediction was 3.9 million square kilometers wrong at the annual minimum in September 2020. 1 Data show the Arctic more stable than media doomsayers portray it to be. Arctic temps show little change over the past 90 years. 2