Eyes come in all sizes. These belong to a domestic cat (from left), an owl and an octopus. The Comparative Ocular Pathology Laboratory of Wisconsin has 56,000 specimens in its collection — including 6,000 from more exotic species.
From left: Andyworks, Ralf Hettler, vicmicallef/iStockPhoto
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From left: Andyworks, Ralf Hettler, vicmicallef/iStockPhoto
Wild horses graze at the Doñana National Park, in the Guadalquivir delta, in southern Spain. Last year, UNESCO threatened to put Doñana on its so-called 'Danger List' of World Heritage Sites where wildlife or conservation are at risk.
Cristina Quicler/AFP/Getty Images
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Michelle Griffith is one of about a thousand adult learners at Motlow State Community College outside of Nashville, Tenn.
Emily Siner/WPLN
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