Deforestation in the Democratic Republic of the Congo has been caused partly by unregulated logging and mining, but mostly by the demands made by the subsistence. Landsat data show the effects of deforestation nearthe town of Ariquemes, Rondonia, Brazil between 1975 and 1992. Global CNN Special Correspondent Philippe Cousteau explains why deforestation occurs and its negative effect on the environment. The History of Deforestation. Deforestation is any process that alters an original tree cover, including cutting all trees on a site, thinning a forest and. In Brazil, deforestation over the course of several centuries destroyed the Atlantic forest of the south-central part of the country (note: the names of Brazil’s. As the area of deforestation increases, so the impact on climate grows. Deforestation is the permanent destruction of forests in order to make the land available for other uses. An estimated 18 million acres (7.3 million hectares) of. Every minute counts. Real-time awareness means real-time intervention. Rainforest Connection (RFCx) transforms recycled cell-phones into autonomous, solar-powered. National Geographic shows photographs, satellite images, and video clips of deforestation and desertification occurring in the world. The Disadvantages of Deforestation. Deforestation has always been an extremely contentious political topic, with vast swathes of the world's forests being sacrificed.