Secrets in the Salt

Take a trip to an underground salt deposit that formed 250 million years ago to search for evidence of ancient life. Learn about the formation of the salt deposit and observe as scientists drill into the salt walls to retrieve samples. See liquids trapped within the salt that are millions of years old, and hear from scientists who were stunned to find that there were fibers of ancient cellulose inside. (NOVA ScienceNOW – 2009)

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