Overview

The most dramatic predictions for the twenty-first century can be found in the fields of biology, computers, nanotechnology, and space exploration. Biology stands ready to create the biggest changes: engineering new species, cloning, growing replacement organs, extending life, and modifying the brain could radically alter our relationship with nature and our view of what it means to be human. Computers are set to shrink until they disappear into our homes, toys, vehicles, and even our bodies. They will be combined into a worldwide network that will be always on, always sensing, and always available. Nanotechnology—building molecular devices—offers possibilities ranging from dust-sized robots to strong, light cables that can give us an elevator into space. All of our own solar system will be in reach for exploration, colonization, and even...