I am a scientist. I go where the facts take me.

Changes in clouds and rainfall can overwhelm what little effect CO2-water vapour has on temperature.

The warming we've experienced in the late 20th century could just as easily be explained by small decreases in cloud cover - natural changes in the system - and have nothing to do with CO2.

Changes in solar activity have influenced what has been called the "conveyor-belt" circulation of the great Atlantic Ocean currents over the past 240 years.

I am a scientist. I go where the facts take me.

The climate system is constantly readjusting naturally in a large way - more than we would ever see from CO2. The CO2 kick [impact of CO2 emissions] is extremely small compared to what is happening in a natural way. Within the framework of a proper study of the sun-climate connection, you don't need CO2 to explain anything.

The hallmark of good science is the testing of a plausible hypothesis that is then either supported or rejected by the evidence.