Environmental Graffiti

Around the Sky in 80 Kilowatts: Edmonds’ Flying Dynamo

It would take a stony hearted environmentalist not to appreciate the uplifting sight of hot air balloons floating in the air. But it could be argued that our oldest flying devices are vehicles for environmental harm given the amount of propane they consume. Now, though, a solar powered hot air balloon has been developed that far from burning up will actually generate energy by working as a giant engine.

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