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| | Surviving Summer in Hudson Bay
The more time polar bears spend hunting on sea ice, the better their chances are of surviving lean times on land later in the year. |
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| | A Waypoint in the Southern Ocean
Remote Macquarie Island has been a stopover for Antarctic explorers and breeding populations of penguins and seals. |
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| | On This Day in 2011: Final Hook-Up
Space Shuttle Atlantis approached the International Space Station for docking for the last time. |
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| | On This Day in 2017: Dunes and Lagoons
Strong winds blowing in from the Western Atlantic sculpt the sand along the coast of southern Brazil into distinctive crescent shapes. |
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| | On This Day in 2013: Elephant Butte Reservoir
The volume of water in New Mexico's largest reservoir dropped to historic lows due to drought and persistent demand. |
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| | On This Day in 2011: Snow in the Atacama Desert
These images provide an unusual sight: snow covering one of the world's driest deserts. |
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| | On This Day in 2015: An EPIC New View of Earth
From one million miles away, the DSCOVR satellite returned its first view of the entire sunlit side of Earth. |