Vacuum cleaner guru Sir James Dyson is inventing another innovative gadget for our home - this one to cool our home without the use of the air conditioner. A/C uses more energy, and thus generates more greenhouse gas emissions, than Dyson's new fan that operates on a modest 40-watt motor. The fan works like a jet engine, sucking air into a cyclone accelerator, then amplifying it 15-18 times before blowing it out over these cool-looking blade-less airfoil-shapes.
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