Water, cut off from the surface for as long as 2.7 billion years may be inhabited by some form of life that has yet to be identified. The findings suggest that there are microbial communities evolving in parallel but separate domains scattered around the globe, all hidden far below the surface.

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Water, cut off from the surface for as long as 2.7 billion years may be inhabited by some form of life that has yet to be identified. The findings suggest that there are microbial communities evolving in parallel but separate domains scattered around the globe, all hidden far below the surface.