When lunar astronauts flick on their televisions after a long day of prospecting, they’ll have a trashcan-size nuclear reactor to thank for their nightly dose of prime time. NASA, looking past the already daunting task of simply getting humans to the moon by 2020, recently started considering proposals for ways to power lunar habitats. Batteries and fuel cells provide only short-term solutions. Solar power would be limited where a single night lasts as long as 354 hours. So space-agency officials have started making plans to go nuclear.
Dear EarthTalk: What are these "ocean deserts" I've been hearing about? Also didn't I read that there was a huge mass of plastic bottles floating around somewhere on the ocean surface? -- Wally Mattson, Eugene, OR
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