Cave systems are the last underground frontier to be explored; they hold secrets that took thousands of years to form…
ecosystem
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The Sun is by far the most prominent, and most intense feature of our entire solar system. As the largest…
(source: roxymusic) Even though everyone has their own favorite season, it’s hard to deny the beauty and majesty of mother…
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(source: fernando) Did you know that today only about 3 percent America’s original rainforests remain? The fate of the world’s…