Bicycle Powered Sump Pump?
In article , "Mikey S." wrote:
it will..as soon as granny lives on the moon, or MAYBE mars.
I don't think so.... human-powered aircraft won't work very well on Mars,
where the atmosphere is too thin to provide much lift.
And of course aircraft of any type won't work *at*all* on the Moon, where
there is *no* atmosphere. DUH!
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