Researchers Appear Certain of Ancient
Bacteriological Life On Mars
March 8, 2001  From SpaceDaily.com: "An international team of researchers has discovered compelling evidence that the magnetite crystals in the martian meteorite ALH84001 are of biological origin."  Space Daily Article

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SpaceDaily caption: Upper figure: Modern magnetotactic bacteria, one showing a chain of magnetite crystals, as seen in the backscattered scanning electron microscope. Lower figure: Magnetite crystals and chains of magnetite crystals in the Martian meteorite ALH84001 in the backscattered scanning electron microscope.. One conspicuous chain indicated by arrows. The diameter of a single crystal ia approximately one-millionth of an inch.