Gold fever is destroying the Amazon rainforest

As gold prices have quadrupled over the past decade, miners across the globe are scrambling to cash in. But the boom has cast a dark shadow across South America's Amazon rainforest. Illegal mining has spiraled out of control in Peru, where more than 40 percent of exported gold is sourced unlawfully, according to an official government survey. Methods used to extract the precious metal are inflicting severe damage on the environment ― including mercury contamination ― and harming local communities. An NHK World crew traveled to the front lines where authorities are trying to crack down on illegal operations.