The cities of the future could combine dense living arrangements with energy innovation, according to the winners of architecture mag eVolo's annual skyscraper design competition. This design collects lightning and uses it to power hydrogen fuel cells. Some of the other winning skyscrapers are habitations, but others are recycling centers, turbines, and water purification facilities — and one's a moon base that looks like a Gaudi cathedral. Click through the gallery on Popular Science and imagine our vertical-living, clean-energy-running, Martian Chronicles-looking future.

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