Human energy!
Put your bike in this bicycle-stand and cycle to generate power that you can store and use for household appliances :)
http://www.econvergence.net/electro.htm
Imagine your local gym (and perhaps some extra houses?) running completely on human-generated power!
(Been spending my lunchbreaks this week surfing for this kinda stuff. Saving natural resources is very important to me: we only have a limited amount, and using it all up seems like a very stupid idea.)
http://www.econvergence.net/electro.htm
Imagine your local gym (and perhaps some extra houses?) running completely on human-generated power!
(Been spending my lunchbreaks this week surfing for this kinda stuff. Saving natural resources is very important to me: we only have a limited amount, and using it all up seems like a very stupid idea.)