Today, in the European Parliament, Maria da Graça Carvalho attended the presentation of the book "Energy for a sustainable world': from the oil age to a sun-powered future" by Nicola Armaroli and Vincenzo Balzani, recently edited by Wiley-VCH. The book surveys the energy issue from a broad scientific perspective while considering environmental, economic and social factors and looking for ways out of the energy and climate crisis, and the problems of disparity generated during the fossil fuel era.