“[H]alf of that greening comes from carbon dioxide itself. In other words, the fact that we’re putting more carbon dioxide into the air means there’s more fuel to grow plants and when a plant has more carbon dioxide in yet doesn’t have to open its pores so much so it doesn’t lose so much water in absorbing the carbon dioxide that it needs to grow and so there’s tons of experiments now showing that plants grow faster if there’s more carbon dioxide in the air; roughly speaking on average for a 200 parts per million increase in carbon dioxide in the air you get a 30% improvement in plant growth. That’s experiments both in the field and in the laboratory. So it’s really quite a remarkable phenomenon here because of the burning of fossil fuels we’re making the planet greener. It’s an astonishing discovery I think. I think it’s rather amazing and of course it’s an incredibly unwelcome discovery for the environmental movement. They don’t want to hear this at all and how is it possible…” – Matt Ridley