Steven Kazlowski / Polar bear (Ursus maritimus) young bear resting and looking up, on newly formed pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska
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Sebastian Kennerknecht / Urban sprawl encroaching on oak savanna, Bay Area, California
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Sebastian Kennerknecht / Urban sprawl encroaching on coniferous forest, Scotts Valley, California
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Sebastian Kennerknecht / Urban sprawl encroaching on coniferous forest, Scotts Valley, California
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Sebastian Kennerknecht / Urban sprawl in grassland, Livermore, California
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Yukihiro Fukuda / Feral domestic rabbit (Oryctolagus cuniculus) lying on its side whilst sleeping, Okunojima Island, also known as Rabbit Island, Hiroshima, Japan.
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Yukihiro Fukuda / Feral domestic rabbit (Oryctolagus cuniculus) napping on back. This behaviour only occurs when a rabbit feels absolutely safe. Okunojima Island, also known as Rabbit Island, Hiroshima, Japan.
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Yukihiro Fukuda / Feral domestic rabbit (Oryctolagus cuniculus) bonded pair sleeping, Okunojima Island, also known as Rabbit Island, Hiroshima, Japan.
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Jeff Vanuga / Rapid housing growth expanding in Colorado Springs with Pikes peak in background. 2004.
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Tui De Roy / Santa Fe land iguana (Conolophus pallidus) with Giant prickly-pear cactus (Opuntia echios), Santa Fe Island, Galapagos, South America.
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Tui De Roy / Santa Fe land iguana (Conolophus pallidus) with Giant prickly-pear cactus (Opuntia echios), Santa Fe Island, Galapagos, South America.
