News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   Birger Rasmussen, Curtin University of Technology |   Earth's First Cave Dwellers This picture shows the fossilized evidence of bacteria that lived in tiny underground caves on Earth 2.75 billion years ago. The existence of such life forms on a relatively inhospitable planet gives scientists another reason to hope that similar life forms could be thriving underground on Mars today.| Discovery News Video   « back to article

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Image Credits Birger Rasmussen, Curtin University of Technology |

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