Check out the Aquarius. It doesn’t have a rotational engine. With just one moving part, no valves, it’s almost frictionless and very light and energy efficient. There are many places it could make a real difference, don’t you think?
Basic survival, emergency preparedness, some politics with a few fun do-it-yourself skills thrown in.
Basic survival, emergency preparedness, some politics with a few fun do-it-yourself skills thrown in.