The Guardian reports: More than half the myriad tree species in the Amazon could be heading for extinction, according to a study that makes the first comprehensive estimate of threatened species in the world’s largest rainforest. Among the species expected to suffer significant falls in numbers are the Brazil nut, and wild cacao and açai trees, all important food sources.

The world’s most diverse forest has endured decades of deforestation, with loggers, farmers and miners responsible for the removal of 12% of its area. If that continues in the decades ahead, 57% of the 15,000 tree species will be in danger, according to the researchers. [Continue reading…]