Jouan Rius / Black oak (Quercus velutina) in autumn, in Yosemite valley, Yosemite National Park, California, USA, December 2012.
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Floris van Breugel / Hillside and swirling mists illuminated by the afternoon sun, in North Cascades Mountains, Washington, USA, September 2012.
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Floris van Breugel / Japanese maple (Acer palmatum) leaves floating in a small pond in late autumn in Seattle's Washington Park Arboretum. Washington USA
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Theo Bosboom / La Hoegne mountain stream in autumn, under water, near Hockai, Belgian Ardennes, November
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Theo Bosboom / Beech (Fagus sp) leaves in autumn, Angerenstein park, Arnhem, the Netherlands, November 2011
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Paul Harcourt Davies,Paul Harcourt Davies / Emergence of Two-tailed Pasha butterfly (Charaxes jasius) Podere Montecucco. Orvieto, Umbria, Italy August. Sequence 6 of 9
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Paul Harcourt Davies / Emergence of Two-tailed Pasha butterfly (Charaxes jasius) Podere Montecucco. Orvieto, Umbria, Italy August. Sequence 1 of 9
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Sven Zacek,Sven Zacek / Baltic sea is freezing up along the northern coast of Estonia. Lahemaa National Park, Estonia, January 2012.
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Sven Zacek,Sven Zacek / Ice sheets before sunrise in Estonia. December 2009.
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Barrie Britton / Mantellid Frog Tadpoles (Guibemantis species) developing on leaf overhanging pond. Association Mitsinjo Reserve, Andasibe, Madagascar. Photograph taken on location for BBC 'Wild Madagascar' Series,...
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Pal Hermansen / Landscape through changing seasons - photograph by Pal Hermansen 'The passage of time' of the same woodland scene in summer, Valer, Ostfold County, Norway. January 2015.
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Pal Hermansen / Summer forest in winter, landscape through changing seasons - photograph by Pal Hermansen 'The passage of time' of the same scene in summer, Valer, Ostfold County, Norway. January 2015.