Natures Wonders- oxygen physiology (Introduction)

by David Turell @, Tuesday, November 08, 2011, 17:37 (2390 days ago) @ David Turell

How do geese transit over the Himalyas in one day?

http://www.scientificamerican.com/article.cfm?id=olympians-of-the-sky&WT.mc_id=SA_D...


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