He noted that Michigan uses gallium arsenide multi-junction photovoltaic cells on their car.
CNN: Michigan solar car team wins 2,400-mile race
Multi-junction solar cells say, fuel cells or, possibly, new aluminium alloys for windmill blades so they can work in higher speed winds.
FORBES: Bill Gates on Renewable Energy
The site at junction 30 of the M62 will also include warehouses, a multi-use games area, a restaurant and 120-bedroom hotel.
BBC: Artist's impression of the new stadium
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