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Space News Archive - April 20, 2004

What was the tipping point when microbial life took over for plant life, when bacteria first took the stage?Astrobiology Magazine -- The bacteria family tree may be facing some changes due to the recent work of an evolutionary biologist at Washington University in St. Louis.

Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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