New tiniest known microbe found

Mon Dec 25 12:04:24 -0800 2006
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As reported in the New York Times, scientists have found an archaeum only 200 nanometers wide. According to the article, this is smaller than any other known life form (excluding viruses, which are not usually considered alive).

The organism was discovered in "drainage water as caustic as battery acid". It is pretty impressive how hardy some extremophile forms of life are; it raises the possibility that life does exist elsewhere than Earth.

The original article, which the New York times article is based on, appeared in Science.