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News Link • Archaeology

Manure Cycle is 6000 Years Old

• arclein
While scientists had long assumed manure wasn't used as a fertilizer until Iron Age and Roman times, new research found enriched levels of nitrogen-15, a stable isotope abundant in manure, in the charred cereal grains and seeds taken from 13 Neolithic sites across Europe, researchers at Britain's Oxford University reported Tuesday.

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