Martin identifies and explains the 15 key challenges for humanity in the 21st Century: heal the planet; end extreme poverty; lower population rates; achieve eco-affluent lifestyles; eliminate war between high-tech nations; design global codes of conduct; manage global biodiversity; end terrorism; harness creativity; detect and prevent the spread of infectious diseases; realise the learning potential in all; manage computer intelligence; control the long-term impacts of all innovation; enhance the human body through technology; and advance towards high-culture civilization. If the 20th Century was all about 'progress', the 21st Century must be about transition, about reconsidering whether all progress, at the same rate, and in the same direction, isn't in fact to charge towards our own extinction. Informed by interviews with experts worldwide, this book is set to have as great an impact on society as Rachel Carson's "Silent Spring", 40 years ago.