The Crab Nebula
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The Crab Nebula
Contrasts and compares the effect of two kinds of dam-building -- that done by beavers, and that done by human engineers. Points out how man is damaging the ecological balance of nature whereas the beaver is not.
Contrasts and compares the effect of two kinds of dam-building -- that done by beavers, and that done by human engineers. Points out how man is damaging the ecological balance of nature whereas the beaver is not.
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Original permalink · Record added 2023-10-28 18:17:19