What would happen if Earth lost its magnetic field? A global blackout. All electronic devices would lose their signals. Birds would fall from the sky, planes would crash, satellites would plummet, and then the atmosphere would gradually drift away as intense cosmic rays descended upon Earth. The water covering three-quarters of the planet's surface would continually evaporate and dwindle... If this continued, Earth's living creatures would gradually go extinct. Fortunately, the magnetic field returned after thirty seconds. But the destroyed global power grid, animal carcasses covering the ground, people who perished in the disaster, and meteor showers caused by falling satellites all bore witness to the catastrophe. Yet the people embracing and weeping after the disaster, and those running around in panic, shouting for help, had no idea that the changes they would face went far beyond this.
