Guardian: A gas pipeline cutting through 660km of Amazon rainforest will deliver cheaper, cleaner energy to a sprawling industrial city buried in the heart of the jungle. But environmentalists fear the pipe is simply a bridgehead towards greater exploitation of the rich gas and oil fields lying beneath some of the most remote and undisturbed rainforest on Earth. Thanks to government tax breaks, the 2 million-strong city of Manaus is an manufacturing powerhouse hidden in the middle of the …