Bill takes to the sky in a hot-air balloon, and goes scuba diving in the Seattle Aquarium to explain why things like boats, helium, and balloons are buoyant.

Caption title. Label title: Disney presents Bill Nye the science guy-- Buoyancy. Originally an episode of the television program Bill Nye, the science guy. 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.