The mantra at Masdar, the zero-carbon city that Norman Foster and Partners are building in the desert, is: Only use energy when you have exhausted design. (Costing The Earth, R4, tonight, 9pm)
Supermassive black holes may provide a nursery for mini ones to grow
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The supermassive black holes at the centres of galaxies may capture smaller
black holes. Not only does this prove a place for the small black holes to
grow...
1 hour ago
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