Carbon coating gives Biochar its garden-greening power

For more than 100 years, biochar, a carbon-rich, charcoal-like substance made from oxygen-deprived plant or other organic matter, has both delighted and puzzled scientists. As a soil additive, biochar can store carbon and thus reduce greenhouse gas emissions, and it can slow-release nutrients to act as a non-toxic fertilizer. See full article at http://environmentalresearchweb.org/cws/article/yournews/70313

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