The Aurora Borealis, the spectacular Northern Lights turn the sky green and purple above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

Aurora Borealis spectacular Northern Lights green and purple curtain effect and Venus star at Grotfjord, Kvaloya island, Tromso, Arctic Circle, Northern Norway

The Aurora Borealis, the spectacular Northern Lights fill the sky with dazzling green light above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

Aurora Borealis spectacular Northern Lights green and purple curtain effect and Venus star at Grotfjord, Kvaloya island, Tromso, Arctic Circle, Northern Norway

The Aurora Borealis, the spectacular Northern Lights fill the sky with dazzling green light above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

The Aurora Borealis, the spectacular Northern Lights fill the sky with dazzling green light above Kvaloya island at Tromso in the Arctic Circle in Northern Norway

The Aurora Borealis spectacular Northern Lights and Venus star at Grotfjord, Kvaloya island, Tromso in the Arctic Circle, Northern Norway

Aurora Borealis spectacular Northern Lights green and purple curtain effect and Venus star at Grotfjord, Kvaloya island, Tromso, Arctic Circle, Northern Norway

Looking through the steel sculpture "Changing Form" by Doris Chase, Kerry Park, skyline of the Seattle financial district with Space Needle, full moon, Columbia Center, formerly Bank of America Tower, Municipal Tower, formerly Key Tower, U.S. Bank Center,

Looking through the steel sculpture "Changing Form" by Doris Chase, Kerry Park, skyline of the Seattle financial district with Space Needle, Columbia Center, formerly Bank of America Tower, Two Union Square Tower, Municipal Tower, formerly Key Tower, U.S.

View through steel sculpture "Changing Form" by Doris Chase, Kerry Park, of the skyline of the Seattle financial district with Space Needle, full moon, Columbia Center, formerly Bank of America Tower, Municipal Tower, formerly Key Tower, US Bank Center, n

Iceberg along the Antarctic Peninsula, Antarctica

Ice at the base of a glacier in Wilhelmina Bay, Antarctica, Wilhelmina Bay, Antarctica

A controlled forest burn, a deliberate fire set to create a healthier and more sustainable forest ecosystem. The prescribed burn of forest creates the right condition for regrowth, Whitman County, Washington, USA

View from above, of melting sea ice off the shores of islands in Antarctica