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jmah
on Aug 12, 2012
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Why Explore Space? A 1970 Letter to a Nun in Afric...
I'm not sure climate change was particularly well-known in 1970.
chris_wot
on Aug 13, 2012
[–]
Not true. While not as widely known, it was still causing concern amongst scientists. Wikipedia is particularly helpful here: see
http://en.wikipedia.org/wiki/History_of_climate_change_scien...
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