Our starting point, in the best traditions of Earth Day, has to be the defence of the planet itself as a viable living space. We as human beings cannot keep on trashing nature without serious consequences.
Aviation is the fastest growing and most dangerous form of greenhouse gas emissions we face. The impact of CO2 emissions at high altitude is around double of such emissions at surface level—a factor which is conveniently ignored by the international aviation industry and by the Tory government.
I have had one of the most positive political experiences of my life, supporting young people organizing against climate change. Their energy, their political sophistication and their sense of humour is infectious.