Professor Hawking was a brilliant theoretical physicist, an influential author and thinker, and a great popular communicator. Throughout his career he was asked questions by business leaders, politicians, entrepreneurs, academics and the general public on a broad range of subjects, from the origins of the universe to the future of the planet. This book brings together his thinking on the most timeless and the most-timely questions in science: Where did we come from? What is inside a black hole? Is there other intelligent life in the universe? How will we survive on earth? How can we colonise space? Will we ever be able to go beyond the Solar System? For both the scientific and the intellectually curious, this book celebrates the mind, humour, and achievements of one of the most inspiring figures in recent history. This book offers Hawking's final thoughts on using science to address the most important challenges facing humanity.