'False' biosignatures may complicate search for ancient life on Earth, and on other planets. Carbon-sulfur microstructures that would be recognized today by some experts as biomaterials are capable of self-assembling under certain conditions, even without direct biological activity.

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'False' biosignatures may complicate search for ancient life on Earth, and on other planets. Carbon-sulfur microstructures that would be recognized today by some experts as biomaterials are capable of self-assembling under certain conditions, even without direct biological activity.