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What will be the best renewable source of energy in 2050?

As of now, we have Wind, Water, Solar, Geothermal, and many more. But as our technology changes and diversifies, do you think we will use completely different sources?

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  • Jul 27 2012: I looked at the page, but I'm still skeptical A megawatt beam is a lot of concentrated energy. And if you're generating megawatts of laser, you also have to cool it. It's hard to cool in space without a convective atmosphere.

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