The bestselling field guide to the 21st century by one of its most celebrated observers. Friedman's thesis is that the planet's 3 largest forces - Moore's law (technology), the market (globalization) and Mother Nature (climate change and biodiversity loss) - are all accelerating at once. An extraordinary release of energy is reshaping everything from how we hail a taxi to the fate of nations. An optimist's guide to thriving in the age of accelerations.