From the New York Times bestselling author of How the World Really Works, a wide-ranging look at the most fundamental governing principle of our world: size, whose laws, limits, and peculiarities offer the key to understanding health, wealth, and even happiness"No one writes about the great issues of our time with more rigor or erudition than Vaclav Smil." — Elizabeth KolbertTo answer the most important questions of our age, we must understand size. Neither bacteria nor empires are immune to its laws. Measuring it is challenging, especially where complex systems like economies are concerned, yet mastering it offers rich rewards: the rise of the West, for example, was a direct result of ever more accurate and standardized measurements.Using the interdisciplinary approach that has won him a wide readership, Smil draws upon history, earth science, psychology, art, and more to offer fresh insight into some of our biggest...