Distributia
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James LurieHimself - Narrator
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Alan W. PenseHimself - Metallurgist, Lehigh University
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Gordon MastertonHimself - Royal Academy of Engineering
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Frank LowensteinHimself - Ecologist, The Nature Conservancy
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Jan ZalasiewiczHimself - Author, 'The Earth After Us'
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Steven S. RossHimself - Author, 'Construction Disasters'
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Rene B. TestaHimself - Civil Engineer, Columbia University
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Stein StureHimself - Civil Engineer, University of Colorado