Roland Pease looks into the new discipline of Green Chemistry, which seeks to improve our world, without doing harm at the same time. Since before the industrial revolution, chemistry has been transforming our lives, and the world around us, giving us medicines, materials, the fuels to make things happen, and the fertilisers and pesticides to boost our crops. But for many that progress has also brought damage in the form of pollution and contamination of the planet. Green chemistry could change all that.