I suppose part of it might be a natural follow on from the argument that the UK's actions will make little difference when you have the likes of China, India etc polluting and contributing to Global warming in such a disproportionate way.
If a country of 60 million plus can make little difference, what difference will little old me make if I use or don't use my tumble dryer?
If a country of 60 million plus can make little difference, what difference will little old me make if I use or don't use my tumble dryer?