Perils, known and unknown, abound. Volcanoes erupt, burying entire cities.
Earthquakes raze in seconds what humans take centuries to build.
Hurricanes and tornadoes scour our coastlines and devastate our cities. Plagues, disease, and starvation threaten humanity at every turn. But these concerns are trivial. The inhabitants of Earth face far greater problems, problems that imperil our very existence. Every day our ozone grows thinner and less able to protect us from the deadly ultraviolet radiation and cosmic rays that continually pummel our planet.