We have had few debates about global warming and climate change. Climate change has been with us for millions of years, ever since the Earth was created. I urge the Secretary of State for Energy and Climate Change to ask a few hard questions of those who are frankly displaying some hysteria about climate change. In the past 2,000 years, there have been periods of warming and cooling. It was warmer during the Roman period; it got cooler in the dark ages; it was probably warmer during the medieval period than it is now, and it got cooler again until about 1680, during the so-called little ice age.