Introduction

The human body is amazing. Our brains have 16 billion neurons that enable us to perform quick calculations, invent new ideas, create tools, relate to others, and create strategies among so much else. Since humankind's earliest years, we've longed to fly like birds. We've invented a way to see at night like owls and other nocturnal predators like cats. Whales have inspired submarines. Bats and dolphins became the inspiration for sonar. A duck's webbed feet were the model for flippers. Drones fly, dive, and hover like hummingbirds or paragrine falcons.