How could biochar be used to help combat global warming?



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    When land must be cleared for agriculture, biochar, the charred remnants of waste biomass, can be added to the soil so that it will retain, not release, carbon dioxide (a major greenhouse gas). It can also improve crop productivity and replenish previously depleted soils so that we don’t have to clear more land for new crop fields. That means that the trees growing on these lands can continue to sequester carbon. So far, the results of using biochar have been promising in Cameroon and in Costa Rica, where it is mixed with a form of compost called bokashi to produce organic crops wth productivity similar to that of conventional farms.

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