For where there is no teacher, school can be taught via radio classes. Radio has crank and solar input.
Dr. Joshua Silver invented these “adaptive lenses” to be tuned by the wearer by pumping fluid to change the curvature of the lens, adjusting the prescription.
Fog Quest – 1 square yard of mesh can collect up to 2 gallons a day in a foggy location where ground water is scarce or inaccessible.
Storage for Fog Quest catchment.
In Tanzania, I had to carry all my water to my house and I’ll tell you, that’s a highly motivating way to use less water.
I’ve often thought while pedaling away or stepping on the “stair master” – why the hell aren’t these things hooked up to the grid or a pump?
Miracle seeds: The Moringa Olifeira tree seadpods are dried and made into a paste that binds with the solid particles in murky water so that the clean water can be filtered out.
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