This is a subject that's very close to my heart, I've worked in climate change and sustainability for a few years. I really don't want to be that kind of politician, but I would like to point out there's evidence, not proof that gravity is a thing and that the Earth goes round the Sun. We know this is happening, we know beyond all reasonable scientific doubt. Climate change is an existential threat to our way of life, more than any issue we have actually heard about in this campaign. It's one that threatens everything, and our time is short. We need to take drastic action and we need to do it immediately. We can't act too fast on this.
There are a few things we need to do. We have to leave the fossil fuels in the ground. We have 3,000 gigatons of CO2 in proven reserved around the world. We can only burn a third of that and have a chance within 2 degrees. So there's no point looking for more - digging up more from underneath the weald. We need to get fossil fuels out of the energy supply with massive investment in renewable and nuclear energy, and get rid of fossil fuel subsidies completely. We need to make our buildings energy efficient, as other people have mentioned, with large-scale installation and upgrade program across the entire country, which has a nice side effect of providing quite a few jobs.
We need to put a proper price on harmful emissions. I'd like to see a carbon currency, where everyone has a budget they can spend per year, and you trade in the appropriate credit whenever you buy energy. And one more thing, we need to de-carbonise road transport by banning the sale of new fossil fuel vehicles by 2030 at the latest, earlier if at all possible. We have all the technology we need to solve this problem. We just need the will. I'd like us to be the generation to fix the mess that we were left with.