Bill Nye the Science Guy (1993)

Episode Overview

The Earth’s surface constantly undergoes transformation as dirt, sand, and rock are swept away, fragmented, and dispersed globally. What was once a towering hill can become a level plain overnight. The planet’s appearance has drastically changed since its formation over four and a half billion years ago. Erosion, the gradual process of land being worn down, remains an unrelenting force shaping the landscape throughout time.