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giant lens to save us from global warming
Apr. 11th, 2005 01:00 pmhttp://www.kuro5hin.org/story/2005/4/7/41932/19363
build a concave Fresnel Lens 1000 kilometres across but only a few millimetres thick at the L1 stable orbital point between us and the Sun, to slightly diffuse its light and cool us down enough to balance the warming effect of carbon dioxide, methane etc.
The downside of this approach is that the other effects of the increased carbon dioxide would have to be addressed, such as increased plant growth (great if you like weeds) and less of an incentive not to pollute the air with fossil fuels. Coal might seem like an even better option to fast-growing developing countries like China, Brazil and Nigeria, meaning sooty, gritty misery for anyone living nearby, unless stringent pollution standards are internationally enforced somehow
build a concave Fresnel Lens 1000 kilometres across but only a few millimetres thick at the L1 stable orbital point between us and the Sun, to slightly diffuse its light and cool us down enough to balance the warming effect of carbon dioxide, methane etc.
The downside of this approach is that the other effects of the increased carbon dioxide would have to be addressed, such as increased plant growth (great if you like weeds) and less of an incentive not to pollute the air with fossil fuels. Coal might seem like an even better option to fast-growing developing countries like China, Brazil and Nigeria, meaning sooty, gritty misery for anyone living nearby, unless stringent pollution standards are internationally enforced somehow
