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LIFE
RTXIPV1
January 28, 1999
- UNDATED FILE PHOTO - Danish researchers said January 28 they had found what they think may be evidence...
Washington, USA
- UNDATED FILE PHOTO - Danish researchers said January 28 they had found what they think may be evid.....
- UNDATED FILE PHOTO - Danish researchers said January 28 they had found what they think may be evidence of the oldest life on Earth - a signature left by plankton 3.7 billion years ago. There is no standard fossil evidence of the plankton, but Minik Rosing and colleagues at the Geologisk Museum in Copenhagen, Denmark, looked for a chemical signature in ancient rocks in west Greenland, shown in this undated photo. Rosing's group examined microscopic globules of graphite, which is pure carbon, from metamorphic rocks known to be 3.7 billion years old and known to have once been seafloor sediment.
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