Our environment should matter to every politician, of all parties. Not just because it matters to voters, or indeed just because it is the right thing to do. The environment should matter to all of us because for us to make the necessary changes we need to make over the next decades, we will need all policy to be made through a green lens. When we are considering how to build more homes, environmental concerns need to be front and centre. When we are thinking about how best to incentivise new businesses, we need to try and tilt fiscal policy in the direction of those investing in innovative technologies that reduce our reliance on fossil fuels. Thinking about the environment requires 360 degree thinking; we need to make our local environment cleaner and to steeply reduce our carbon emissions. But we need to do so in a way that maintains the living standards of the people of this country or the world. I reject the pessimism of those who insist that economic growth is inherently inimical to a greener planet. One of the most fundamental tasks in the next 10 years will be to design an economy with much less reliance on fossil fuels, whilst also making our country more prosperous over the long term and in a more sustainable way.