Well following some more research (i.e. having tested those variables) it turns out that of the possible scenarios the one we're actually heading for is the worst case scenario - 6C of global temperature rise, large parts of the earth becoming uninhabitable, massive waves of migration towards dwindling resources leading to wars and genocides and ultimately potentially the end of the human race forever.
I think - if we survive - one day our grandchildren will look back on those of us who didn't campaign to stop climate change the way we look back now on ancestors who supported slavery. The future equivalent of shows like Who Do You Think You Are? will see our descendants digging through records deserately hoping to turn up an eco-warrior and quick to stop the cameras rolling if the National Facebook Profile Archive lists your favourite TV shows as Top Gear.
Ultimately though the government needs to take action. And I don't mean by putting out adverts with images of dolphins on and softly worded guilt-trips about recycling. If only those who choose to reduce their footprint then those who don't are placed at an economic advantage, incentivising others to do the same. Nor do I mean by fining people who put two pieces of garden waste into the blue box. I mean by actively funding research - here and overseas - into alternative energy sources, by actually paying for people to have their homes insulted and double-glazed, by removing tax breaks on airline fuel, subsidising public transport, cutting the number of flights that can be made, cracking down on emissions from factories and power plants and making sure that developing countries have the support they need to do the same without compromising progress.