Amazon rainforest could reach 'tipping point' by 2050, scientists warn

Authors of study call for action to prevent possible collapse of region's ecosystems and climate impacts that would resultSwathes of the Amazon face pressures that could lead to a "tipping point" by 2050, prompting large-scale collapse of the key forest systems, scientists have warned.A study published in the journal Nature found that by the middle of the century, 10% to 47% of Amazonian forests will be threatened by a combination of impacts including global warming, changing rainfall, longer dry seasons, deforestation and fires. Continue reading...