GravityDVD - 2008
Have you ever wondered what holds the ocean on the Earth? Or what makes the Earth round? Perhaps you've thought about what holds humans to the ground? Host Bill Nye provides the explanation for these and other questions about the Earth's gravity.
Publisher: Elk Grove Village, IL : Walt Disney Educational, c2008
Characteristics: 1 videodisc (26 min.) : sd., col. ; 4 3/4 in