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What's more,
Dr. Walford says at that age, his life is only
about half over
Dr. Walford says at that age, his life is only
about half over
Full Transcript
00:00:01.000 --> 00:00:03.236
What's more,
Dr. Walford says at that age,
00:00:03.269 --> 00:00:05.772
his life is only
about half over.
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Movie Summary
A look at the group of people who built the Biosphere 2, a giant replica of the earth's ecosystem, in 1991.