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Our original designs for the biomes – hundreds of hexagonal and pentagonal cells supported by geodesic tubular steel – looked more like Waterloo, but we used ETFE foil, or ethylene tetrafluoroethylene, which was more transparent than glass but extremely lightweight. It uses 1% of the energy and carbon of glass. The difficulty was creating biomes that would interlock across a constantly shifting landscape. — The Guardian
The Eden Project with its famed geodesic biomes opened twenty years ago on March 17th, 2001 in Cornwall, England. Inside the tropical biome of the Eden Project. Photo: Hchc2009/Wikimedia Commons. View full entry
