Even the idea that Planet Earth could be shielded from the sun and global warming by a cloud of mirrors has been floated by some scientists.
The Engineer Online reports:
"A concept, championed by astronomer Roger Angel of the University of Arizona, is positively James Bond-like in scale. He has proposed creating a 100,000-square-mile 'sunshade' in space, orbiting the Sun at the inner Lagrange Point (L1), 1.5 million kilometres from the Earth in a direct line between star and planet, where it will keep station and reduce the amount of sunlight hitting the Earth.The sunshade would be made up of hundreds of millions of small solar deflectors, about 60cm in diameter and made from a transparent film, formed into a cylindrical 'cloud' 60,000 miles long and about half the diameter of the Earth. Around 10 per cent of the sunlight travelling through the cloud would be deflected to a path where it misses the planet, reducing the amount of incident solar radiation by about two per cent. This, Angel calculates, is enough to offset the consequences of the greenhouse effect." See full article.
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