A crash course in changing the world.
I chose a creative electricity project from Yanko Design (Yanko Design).
Altough they considerably say that their invention is not a "green project" I still think the idea is really useful.
The designers Song Teaho and Hyejin Lee came up with a human-powered battery for mobile phones.
All you need to do is remove the battery for a few turns around your finger and it's charged to last a conversation. This is very useful if you don't have a socket around.
It is also possible that the idea will be expandet to use the principle for other devices as well.
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