Future cities could include pancake-shaped buildings, power plants that harvest lightning and ocean-based skyscrapers that produce potable water and clean up trash. Those are some of the visions in the 2011 eVolo Skyscraper Competition, a forum for futuristic — and even fantastical — ideas for new architecture.
Click here to see the winning designs and some other interesting entries.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.