Cave systems are the last underground frontier to be explored; they hold secrets that took thousands of years to form…
ecosystem
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…
(source: fernando) Did you know that today only about 3 percent America’s original rainforests remain? The fate of the world’s…