Life is on the up. We are wealthier, healthier, happier, kinder, cleaner, more peaceful, more equal, and longer-lived than any previous generation. Thanks to the unique human habits of exchange and specialization, our species has found innovative solutions to every obstacle it has faced so far. In ‘The Rational Optimist’, acclaimed science writer Matt Ridley comprehensively refutes the doom-mongers of our time, and reaches back into the past to give a rational explanation for why we can – and will – overcome the challenges of the future, such as climate change and the population boom. Bold and controversial, it is a brilliantly confident assertion that the 21st century will be the best for humankind yet.