MIT students have come up with a way to recharge your laptop without plugging it in. Rather than consuming electricity, you'll be burning calories--your own.
The students designed and built an exercise bicycle that uses "pedaling power" to charge a laptop computer. As the bike's instructions note, if you have trouble "squeezing in that daily exercise," you can now "multitask with no problem--[you can] bike while you work!"
for complete story,,, please follow the link

for complete story,,, please follow the link
http://web.mit.edu/newsoffice/2007/energy-laptop-1108.html