Evolutionary ecology theory applies principles of biological evolution to explain variation in how living creatures appear and behave. For example, how many sons versus daughter should a mother produce? How much should a male invest in courtship versus maintaining a healthy immune system? Evolutionary theory can explain differences among species, across populations and between individuals. Natural selection leads to the evolution of organisms that maximize their evolutionary fitness, which is their lifetime reproductive success (plus the extent to which they further assist related individual with whom they share genes to reproduce). The traits and behaviours that maximise fitness depend, however, on how the local environment/ecology affects the costs and benefits they impose on fitness. In many ways, evolution is akin to economic decision making, except that no-one is making decisions. Instead, the outcome is due to the blind process of natural selection. I intend to use the ease with which people grasp how plants and animals are ‘designed’ to increase the number of descendants they leave behind to write a book that explains the solutions (and impediments) to major economic and social challenges that people find hard to understand when masked in the jargon of economics, politics, and sociology.