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A 40 year study of African tropical forests-one third of the world's total tropical forest-shows that for at least the last few decades each hectare of intact African forest has trapped an extra 0.6 tonnes of carbon per year. The scientists then analysed the new African data together with South American and Asian findings to assess the total sink in tropical forests. Analysis of these 250,000 tree records reveals that, on average, remaining undisturbed forests are trapping carbon, showing that they are a globally significant carbon sink. [Source: ScienceDaily]
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