Oil, as we know, is a non-renewable resource. But where does it come from? How is it produced? And what if it will end up? Goodbye, Oil is the latest illustrated book by Harriet Russell which presents the issue of energy saving and renewable sources to the public of children and grown-up. From separate waste collection to thermal insulation, from recycling to pollution reduction; this story shows us that it is not true that we cannot change the world, because everyone can make the difference. A book to learn more about sustainability and today's problems, in a simple and ironic way.