Cathedral Peak, Yosemite National Park, California (© Mark Brodkin/Rex Features)(Bing United States)

[20141001] - 'Cathedral Peak, Yosemite National Park, California (© Mark Brodkin/Rex Features)(Bing United States)'

Sheep with a border collie in England (© Wayne Hutchinson/Minden Pictures)(Bing United States)

[20140930] - 'Sheep with a border collie in England (© Wayne Hutchinson/Minden Pictures)(Bing United States)'

Hohenzollern Castle near Stuttgart, Germany (© Heinz Wohner/Getty Images)(Bing United States)

[20140929] - 'Hohenzollern Castle near Stuttgart, Germany (© Heinz Wohner/Getty Images)(Bing United States)'

Boathouses on Lake Panache, Greater Sudbury, Ontario, Canada (© Don Johnston/Corbis)(Bing United States)

[20140928] - 'Boathouses on Lake Panache, Greater Sudbury, Ontario, Canada (© Don Johnston/Corbis)(Bing United States)'

Alaska Peninsula National Wildlife Refuge (© Steven Besserman/Corbis)(Bing United States)

[20140927] - 'Alaska Peninsula National Wildlife Refuge (© Steven Besserman/Corbis)(Bing United States)'

Elephants in the Okavango Delta, Botswana (© Michael Poliza/Getty Images)(Bing United States)

[20140926] - 'Elephants in the Okavango Delta, Botswana (© Michael Poliza/Getty Images)(Bing United States)'

Buttermere, Lake District National Park, England (© Chris Warren/SuperStock)(Bing United States)

[20140925] - 'Buttermere, Lake District National Park, England (© Chris Warren/SuperStock)(Bing United States)'

Banana slug in Prairie Creek Redwoods State Park, California (© Michael Nichols/Getty Images)(Bing United States)

[20140924] - 'Banana slug in Prairie Creek Redwoods State Park, California (© Michael Nichols/Getty Images)(Bing United States)'

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