Humanity is facing a critical moment Our world is changing rapidly, in a menacing phase of instability where our species is surrounded by existential threats. On the one hand, different scenarios populate our horizons, both positive and negative, and on the other our viewpoint of the future is a jumble of short-term reflections, debates that divide rather than unite and rhetorical agitation and pessimism. In this short and exciting essay, Martin Rees argues that the key to taking control of our destiny is science. Biotechnology, artificial intelligence, aerospace engineering and robotics are all tools that can provide us with the necessary impetus to face up to and overcome the challenges that await us. As a book, Our Future paints a vast fresco of our today, with a lucid and penetrating perspective on our tomorrow... a profound and optimistic reflection on the relationship between science and society.