The Knowledge: How to Rebuild Our World from Scratch

With breezy aplomb in this fast-paced, detailed guide, Dartnell (Life in the Universe) takes us through a hypothetical post-apocalyptic scenario. He covers not only the little steps for making it through the first 48 hours%E2%80%94finding shelter, clean water, food%E2%80%94but through the longer processes of "rebooting civilization" such as reinstating agriculture, recovering medicine and medical knowledge, and re-establishing communication, among others. This isn't simply a bare bones guide to how many water bottles or rolls of duct tape to stockpile in anticipation of a global disaster. Dartnell draws deeply on the scientific fundamentals of each step required to rebuild society to the level at which we now live. For example, as we re-establish communication with others, the first step will be writing. In order to make paper we'd need to "pour a dollop of%E2%80%A6sloppy cellulose soup across a fine wire mesh or cloth screen, bounded on the sides by a frame." To get the power back on, we'd need to build four-sail windmills or waterwheels to harness the natural forces necessary to generate electricity. If a nuclear catastrophe or a viral epidemic destroyed our world tomorrow, this would be a vital survival guide. (Apr.)