Why Don't Jumbo Jets Flap Their Wings? offers a fascinating explanation of how nature and human engineers each arrived at powered flight. What emerges is a highly readable account of two very different approaches to solving the same fundamental problems of moving through the air, including lift, thrust, turning, and landing. The book traces the evolutionary process of animal flight-in birds, bats, and insects-over millions of years and compares it to the directed efforts of human beings to create the aircraft over the course of a single century.