What is the real role of carbon dioxide in the atmosphere? Why is the climate no warmer now that it was a thousand years ago, when the level of carbon dioxide has nearly doubled? Why do we have deserts? Why are they sometimes there, along the subtropics, and sometimes not? Why did the last ice age end so quickly, so that the temperature in Greenland rose by seven degrees Celsius in just three years? Why was there an ice age? Why is the planet so cold now, compared to the way it was in the distant past? What was the real reason for the extinction of the dinosaurs?These are just some of the...