10 Feb '12, 2pm

Early humans played a role in deforestation of Central Africa #climatechange #africa #deforestation

10 Feb 2012: Early Humans Played Role in Central African Deforestation, Study Says A new study says that the activities of early humans — and not simply a dramatic shift in climate — played a significant role in transforming the ancient rainforests of Central Africa into savanna . In an analysis of sediment cores taken from the mouth of the Congo River, a team of scientists found evidence that weathering of clay sediment samples, which had been consistent for thousands of years, intensified abruptly about 3,000 years ago, indicating a significant increase in deforestation. According to their study, published online in Science , this shift coincided with the arrival of Bantu-speaking farmers from present-day Nigeria and Cameroon. While this forest disturbance was likely triggered by prolonged dry spells that destroyed rainforest, as previous research has concluded, the Scie...

Full article: http://e360.yale.edu/digest/early_humans_played_role_in_c...

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