Somewhere in the world, the solutions exist - we just need to know where to look. Sometimes the solutions are closer than we think. Denmark will reach 100 per cent renewable electricity by 2030. Iceland has topped gender equality rankings for a decade and counting. Singaporean students beat almost all others in maths and reading. South Koreans will soon live longer than anyone else on Earth. The US city of Boston, global epicentre of biotech, has the most innovative square mile on the planet. How have these places and more achieved such remarkable success? Policy adviser Andrew Wear examines what has worked around the world and how we can apply the lessons at home, introducing us to inspiring community leaders, renowned authorities and visionary policymakers transforming the globe. We don't have to look far to tackle humanity's most pressing concerns. Solved! is a much-needed dose of optimism in an atmosphere of doom and gloom, a toolkit for those seeking social change. Informative, accessible and revelatory, it shows the solutions exist - we just need to know where to find them.