Mongabay: Warming climate could decimate up to 85 percent of the Amazon rainforest by 2150, according to a new computer model. The study, to be published in Nature Geoscience by researchers from the UK Met Office’s Hadley Centre, found that even a 1-degree rise in global temperatures would cause the “irreversible” loss of large tracts of forest. A larger increase could be “devastating” — 75 percent for a 3-°C-rise and 85 percent for a 4-°C-rise. “A temperature rise of anything over 1°C …