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OhGizmo!: OhGizmo! » Archive » PlayPumps

Brian · 3 years ago

There was actually a PBS special on the PlayPumps. You can actually watch it online at: http://www.pbs.org/frontlineworld/rough/2005/10...
jayvee f. · 3 years ago

what i especially love about this concept is that its so simple, it works! self-sustaining and fun to use.

i wonder if the same can be done for electricity where you can store energy into a huge battery.