This film targets a grade-school audience but will prove informative to anyone fascinated by our home planet's evolution. Hurricanes, glaciers, volcanoes, thunderstorms, asteroid impacts, undersea furnace vents, and earthquakes are all explored as a system of interconnected forces that ensure the planet's survival. The difference between this and other nature films is that the Earth's delicacy is emphasized by stunning views from space, filmed in the IMAX format by NASA astronauts in orbit 200 miles above the Earth's surface. With astonishing clarity, this orbital perspective supports the film's ultimate purpose: to reveal the awesome beauty of the Earth, and to emphasize that we, the custodians of this miraculous gift, are also the greatest threat to the planet's delicate health. Proof of man's destructive influence offers a sobering reminder that our responsibility toward nature is perpetual, essential, and routinely abused.