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A polar bear and its cub in Arctic National Wildlife Refuge, Alaska.
slideshow

Celebrating Marine Moms

 The ocean is home to many moms of all shapes and sizes: from charismatic polar...
Wed, 04/24/2013 - 17:29
Magellanic penguins on the beach in Punta Tombo, Argentina
Photo

Punta Tombo Penguins

 Every breeding season, some 400,000 Magellanic penguins (Spheniscus magellanicus)...