Can rust generate electricity?

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We speak to one of the scientists who have combined rust with saltwater to produce electricity. The US drugmaker Purdue Pharma is negotiating a multi-billion dollar settlement to resolve around two thousand lawsuits over the opioid addiction epidemic. A New York court has heard emotional testimony from women who say they were sexually abused by the financier Jeffrey Epstein -- who died in prison before he could be tried. South Africa nurses union tells us why they want increased security at the country's hospitals after dozens of them report attacks.