Is it safe to visit the Amazon?

The murder of British kayaker Emma Kelty on a remote stretch of the Solimões – the name by which the mighty Amazon is known upriver of Manaus – will understandably give pause to anyone planning a visit to Brazil’s green heartland. Brazilian police said Miss Kelty had been shot and killed by robbers – known locally as ‘water rats’ – who then dumped her body in the river. It comes less than a year after police chief, Thyago Garcez, disappeared on the same stretch of river, after he and fellow officers got into…