David MacKay interview on Climate Change

http://www.davidstrahan.com/blog/?p=1104 is a link to an interview with David MacKay one of the top civil servants on climate change, he is also the author of an excellent book.
Mathematical analysis offers a lot in understanding the challenges we face, and its great to see an eminent physicist being involved in such things.
What is very interesting is how important Nuclear Energy is in the calculations, its very difficult to reach power output without this happening.