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With summer just around the corner, what’s the geekiest way to keep cool? It could just be the Solar Hat Fan. Solar_Hat_Fan The Solar Hat Fan: parents can be so cruel The eco-friendly gadget does exactly what it says on the tin: keeps you cool, by sourcing the juice to run its fan blades directly from the sun’s warming glow …

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eco-friendly not.!

Hold on, since when was making throwaway junk eco-friendly!

What happens to the cadmium and gallium in the photovoltaic cell when it gets chucked? What about the energy used in manufacture?

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Erm...

I had one of these when I was 10.

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