Bill Nye the Science Guy goes full tilt to give the reasons for the seasons. In Earth's Seasons, his worldly perspective show why it winter in America when it's summer in Australia.

Originally broadcast on the television program: Bill Nye, the science guy. Special features: Fully indexed "chapters" correlated to National Science Standards; interactive glossaries and quizzes; bonus footage of never-before-seen segments, interviews, and demos; on-disk implementation guide.