Testing how objects act in microgravity is not limited to astronauts on the space station. On Earth, you could do it with the world’s largest air hockey table, made from a gigantic slab of rock.
Dept.: DIYTech: Hand-built portable gamesCost: $150â€$400Time: 18 hoursPractical | | | | | Popcorn
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.
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