Indigenous communities in Peru have announced a settlement with oil giant Occidental Petroleum in a landmark case over three decades of pollution in the Amazon rainforest. In 2007, Achuar indigenous communities sued Occidental in U.S. court after a report by Amazon Watch and Earth Rights International accused the firm of dumping millions of barrels of toxic waste directly into rivers and streams, resulting in widespread lead and cadmium poisoning. The settlement was actually reached in 2013, but the terms of the deal kept it secret until Thursday. Occidental will sponsor development projects under the deal, but the sum was not disclosed.