When it comes to global warming, rational debate is what we need

We had a sell-out debate on global warming at The Spectator on Tuesday and, as I found out this morning, the debate is still going on. The teams were led by Nigel Lawson and Sir David King, and I was in the audience. I tweeted my praise of Simon Singh’s argument as he made it: it was a brilliant variation on the theme of “don’t think – trust the experts”. He seems to have discovered the tweet this morning, and responded with a volley of five questions for me. Then David Aaronovitch weighed in, followed by Simon Mayo. At 8.35am!

I had the choice between replying, or carrying on with my gourmet porridge. I chose the latter, and promised to blog my response later on to Simon Mayo and the Breakfast Crew. So here goes. Simon Singh tweeted me five questions:

1. Do you agree that increases in CO2 and other greenhouse gases lead to an increase in the global temperature?

2.