Books like Ecotopia Emerging
Ernest Callenbach
Ecotopia Emerging is 326 pages, about 5 hours 59 minutes at 250 words a minute.
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The Anthropocene Reviewed 6.0 h 
Biomimicry 5.8 h 
Tuf Voyaging 8.1 h 
Getting Good Government 9.7 h 
The Systems View of Life 9.2 h Bar height shows length. Estimated at 250 words a minute.