A change of heart keeps bears healthy while hibernating
Hibernating, it turns out, is much more complicated than one might think.
Hibernating, it turns out, is much more complicated than one might think.
Plants & Animals
Feb 7, 2011
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A teenage saint whose 750-year-old mummified body lay for centuries in a church in central Italy probably died of a congenital heart defect, scientists said Thursday.
Archaeology
Jun 10, 2010
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