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Ancient microbes made giant magnets - Magnetic fossils show how climate change creates new extremes.
Nature News ^
| 20 October 2008
| Ashley Yeager
Posted on 10/20/2008 6:44:17 PM PDT by neverdem
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To: neverdem; SunkenCiv; All
I should have said the sudden increase was about 55 million years ago.
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