15 Continents That No Longer Exist
(via mental_floss) Earth only has so much space. Over time, the continents have merged and divided on countless occasions. Accordingly,
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geology
How Nature Creates Uncannily Spherical Boulders
(via Atlas Obscura) Large boulders shaped like nearly perfect spheres can be found in a handful of places around the
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15 Continents That No Longer Exist
(via mental_floss) Earth only has so much space. Over time, the continents have merged and divided on countless occasions. Accordingly,
Read more
Lava Lakes: The Exposed Guts of Volcanoes
(via Amusing Planet) Most volcanoes have a deep inner chamber of molten rocks, but this chamber is typically capped shut
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