Benjamin Olson / Gentoo Penguin (Pygoscelis papua) wading, Antarctica

Benjamin Olson / Gentoo Penguin (Pygoscelis papua) wet from rain due to climate change, Antarctica

Benjamin Olson / Mountain Lion (Puma concolor), Torres del Paine National Park, Chile

Benjamin Olson / Mountain Lion (Puma concolor) and mountains, Cordillera Paine, Torres del Paine National Park, Chile

Benjamin Olson / Rock formations and mountain range, Cordillera Paine, Torres del Paine National Park, Chile

Benjamin Olson / Great Gray Owl (Strix nebulosa), Sax-Zim Bog, Minnesota

Benjamin Olson / Skim ice in negative thirty degree fahrenheit at sunrise, Lake Superior, Grand Portage National Monument, Minnesota

Benjamin Olson / Cave at night during polar vortex, Lake Superior, Tettegouche State Park, Minnesota, multiple exposures

Benjamin Olson / Storm clouds, Lakeville, Minnesota

Carol Walker / Wild grey Mustang mare drinking with sorrel foal at her side with pinto band stallion behind in Sand Wash Basin, Colorado, USA. May 2013.

Benjamin Olson / Canoe in fog, Superior National Forest, Minnesota

Benjamin Olson / Common Loon (Gavia immer) parent carrying chick, Minnesota

Benjamin Olson / Common Loon (Gavia immer) parent with chick, Minnesota

Benjamin Olson / Common Loon (Gavia immer) parent carrying chicks, Minnesota

Benjamin Olson / Common Loon (Gavia immer) parent carrying chicks, Minnesota

Benjamin Olson / Common Loon (Gavia immer) stretching, Minnesota

Benjamin Olson / Common Loon (Gavia immer) parent carrying chick, Minnesota

Benjamin Olson / Common Loon (Gavia immer) among dead insects, Lutsen, Minnesota

Benjamin Olson / Balsam Poplar (Populus balsamifera) trees in winter, Superior National Forest, Minnesota

Benjamin Olson / Black Spruce (Picea mariana) trees at night, Superior National Forest, Minnesota

Benjamin Olson / Northern White Cedar (Thuja occidentalis) tree with Pileated Woodpecker (Dryocopus pileatus) holes, Superior National Forest, Minnesota

Benjamin Olson / Northern White Cedar (Thuja occidentalis) tree with Pileated Woodpecker (Dryocopus pileatus) holes, Superior National Forest, Minnesota

Benjamin Olson / Canoer paddling, Junco Lake, Superior National Forest, Minnesota

Benjamin Olson / Forest on shoreline, Mantrap Lake, Minnesota

Benjamin Olson / Moose (Alces alces andersoni)female in river, Seagull River, Superior National Forest, Minnesota

Benjamin Olson / Moose (Alces alces andersoni) mother and twins in pond, Superior National Forest, Minnesota

Benjamin Olson / Moose (Alces alces andersoni) female wading in pond, Superior National Forest, Minnesota

Benjamin Olson / Moose (Alces alces andersoni) yearling twins, Superior National Forest, Minnesota

Benjamin Olson / Red Fox (Vulpes vulpes) carrying rodents, bird, and egg back to den, Superior National Forest, Minnesota

Benjamin Olson / Snowshoe Hare (Lepus americanus) in winter, Superior National Forest, Minnesota

Benjamin Olson / White-tailed Deer (Odocoileus virginianus) buck, Minnesota

Benjamin Olson / White-tailed Deer (Odocoileus virginianus) buck, Minnesota

Benjamin Olson / White-tailed Deer (Odocoileus virginianus) piebald buck in winter, Minnesota

Benjamin Olson / White-tailed Deer (Odocoileus virginianus) piebald buck, Minnesota

Benjamin Olson / White-tailed Deer (Odocoileus virginianus) bucks, including piebald male, Minnesota

Benjamin Olson / Chinstrap Penguin (Pygoscelis antarctica) group, Antarctica Peninsula, Antarctica

Benjamin Olson / Chinstrap Penguin (Pygoscelis antarctica) calling, Antarctica Peninsula, Antarctica

Benjamin Olson / Chinstrap Penguin (Pygoscelis antarctica), Antarctica Peninsula, Antarctica

Benjamin Olson / Mountain Lion (Puma concolor), Torres del Paine National Park, Chile

Benjamin Olson / Antarctic Fur Seal (Arctocephalus gazella) female scratching herself, Antarctica

Benjamin Olson / Chinstrap Penguin (Pygoscelis antarctica) on snow, Antarctica

Benjamin Olson / Chinstrap Penguin (Pygoscelis antarctica), Antarctica

Benjamin Olson / Ice floes, Antarctica

Benjamin Olson / Icebergs, Antarctica

Benjamin Olson / Iceberg and coastal mountains, Antarctica

Benjamin Olson / Tabular iceberg, Antarctica

Benjamin Olson / Tabular iceberg, Antarctica

Benjamin Olson / Adelie Penguin (Pygoscelis adeliae) crossing coastal rocks, Antarctica