There is no mystery or guesswork about the cause of recent global warming – it can be directly measured. Satellites observe less radiation escaping to space at those exact wavelengths that carbon dioxide absorbs radiation. Less heat escaping to space means more heat returning to Earth and this is confirmed by surface measurements.
Currently, Greenland is losing 300 billion tonnes of ice a year. Over the same period, Arctic sea ice has been thinning and melting, glaciers have been shrinking at an accelerating rate and seasons are shifting due to warming temperatures.
There is no mystery or guesswork that Cook is clueless. There hasn’t been any recent warming, despite Romm’s “super-exponential” growth in CO2 over the last decade.
Temperatures have been rising more slowly than Hansen’s low-emissions scenario C. Can these clowns please give it a rest?