''Be brave, be curious, be determined, overcome the odds. It can be done''Will we survive on Earth?Should we colonise space?Throughout his extraordinary career, Stephen Hawking expanded our understanding of the universe and unravelled some of its greatest mysteries. In Will We Survive on Earth? the world-famous cosmologist and bestselling author of A Brief History of Time turns his attention to one of the most urgent issues for humankind and explores our options for survival.''Effortlessly instructive, absorbing and witty'' GuardianBrief Answers, Big Questions: this stunning paperback series offers electrifying essays from one of the greatest minds of our age, taken from the original text of the No. 1 bestselling Brief Answers to the Big Questions.