Neil Lucas / Cameraman Keith Brust filming with Red Camera, in Birch woodland (Betula papyrifera) for BBC Life series, Minnesota, USA, March 2008
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Sebastian Kennerknecht / Bay Bridge and San Francisco at twilight, San Francisco Bay, California
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Pete Oxford / Bridge being built across Napo River to connect the town of Coca with Yasuni National Park, Amazon, Ecuador
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Pete Oxford / Town of Coca with Yasuni National Park across Napo River, Amazon, Ecuador
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Matthias Breiter / Fireworks over Vancouver, British Columbia, Canada
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Matthias Breiter / Fireworks over Vancouver, British Columbia, Canada
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Matthias Breiter / Seattle at night, Seattle, Washington
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Albert Lleal / Sewage and shacks in Dhaka slum, Bangladesh
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Sebastian Kennerknecht / Arrowhead Marsh at high tide with the city of Alameda in the background, Martin Luther King Jr. Regional Shoreline, San Francisco Bay, California
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Colin Monteath / Smog and smoke from wood and coal fires at dawn blankets central city, Christchurch, Canterbury, New Zealand
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Colin Monteath / Factory chimneys belch smoke, winter smog makes it hard to see houses between trees, Christchurch, Canterbury, New Zealand
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Colin Monteath / Smog and early winter cloud inversion layer at dawn blankets central city, Christchurch, Canterbury, New Zealand
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Colin Monteath / Smog and early winter cloud inversion layer at dawn blankets central city, Christchurch, Canterbury, New Zealand