Aerial view of the construction site of a hydroelectric dam along Teles Pires river near Alta Floresta...
An aerial view of the construction site of a hydroelectric dam along the Teles Pires river, a tributary of the Amazon, near the city of Alta Floresta, Para state, June 19, 2013. The Amazon rainforest is being eaten away at by deforestation, much of which takes place as areas are burnt by large fires to clear land for agriculture. Initial data from Brazil's space agency suggests that destruction of the vast rainforest - the largest in the world - spiked by more than a third over the past year, wiping out an area more than twice the size of the city of Los Angeles. If the figures are borne out by follow-up data, they would confirm fears of scientists and environmental activists who warn that farming, mining and Amazon infrastructure projects, coupled with changes to Brazil's long-standing environmental policies, are reversing progress made against deforestation. Environmental issues will be under the spotlight as a United Nations Climate Change Conference opens in Warsaw, Poland, November 11. Picture taken on June 19, 2013. REUTERS/Nacho Doce (BRAZIL - Tags: AGRICULTURE POLITICS ENVIRONMENT)
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