It's possible that we'll screw up the climate so badly that most of us will die and a few breeding pairs will remain somewhere in the arctic. What's more likely is that we'll continue remaking the planet, driving many species to extinction, killing millions of people through the indirect effects of climate change, making life even harder for the poor and powerless than it is now, and making it a little more difficult for the global middle class to live the lives to which they have become accustomed - in other words, business as usual, only worse.

Every country now has its own domestic political debate about how to respond to climate change. This is where the action is.

Climate change involves fundamental choices about how we want to live and what kind of world we want.

When I first started studying climate change back in the 1980s, I was struck by how difficult it was be for people to understand this issue.

Citizens often think of a state's interests in terms of the promotion of ideals such as democracy, a particular way of life, or other values which they endorse or see as part of their historical continuity and identity. In this domain as in others values are not fixed, and so a state's interests are dynamic and in a constant state of negotiation and construction.

You can't imagine anything like nature as we know it without predators.

I became religious and at 14 went to a boarding school 500 miles from home to begin theological studies. By the time I started university, politics had replaced religion in the economy of my enthusiasms but I had no idea what to study. My boarding school emphasized languages which I was bad at, and deemphasized math and science which I was good at.