©1998 MacGillivray Freeman Films. All Rights Reserved.

Presented by POLARTEC®

Major Funding by:

National Science Foundation

Sponsored in part by:

Museum of Science, Boston

Denver Museum of Natural History

Fort Worth Museum of Science and History

Houston Museum of Natural Science

National Museum of Natural Science (Taichung)

Science World, British Columbia, Vancouver

®

This material is based upon a giant screen film supported by the National Science Foundation under grant No. 961470. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).

"Great Adventure Film Series" is a registered trademark of MacGillivray Freeman Films, Inc."

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