Scientists Discovered the Tunnels of a Possibly Unknown Ancient Lifeform
For most organisms on Earth, rocks are objects, not food. But for one oddball microbe, desert limestone seems to have been on ...
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Evidence of an Unknown Life Form That Lived Inside Marble and Limestone, Found in Namibia and Arabia
In the vast and arid landscapes of Namibia, Oman, and Saudi Arabia, a team of researchers has identified a series of peculiar structures in marble and limestone formations, whose origin does not seem ...
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The Important Difference Between Limestone & Gravel
Put simply, limestone is a type of rock that is formed by organisms, while gravel is a mixture of many different rocks. Both ...