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Mar 10, 2014, 6:38 pm20 pts
Grist
NASAA record making hole in the ozone layer, in 2000. There are things we know that we know, there are things that we know we don’t know, and there are four previously unknown ozone-eating gases that we now know are eating the ozone. (It goes something like that, right?) No, we are not back in 1985, when…
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