I am 45, live in victoria BC and work as a stonemason. I have 2 simple 3rd world help projects. The pulser pump which uses water power to pump water. Pulser pumps have no moving parts and are not ram pumps. They can use large volumes of low grade water power. I also made the "mechanical mathematician" which is a simple device to form a decent parabola for solar ovens. It can be used directly to form the parabola with no knowelege of mathematics. I expect the mathematician to be used widely in the next couple of years. I made the first one in late august 2007