https://www.reuters.com/article/us-musk-lawsuit/elon-musk-returns-to-testify-in-defamation-trial-over-pedo-guy-tweets-idUSKBN1Y81B9 >Tesla Chief Executive Elon Musk returned to court on Wednesday to resume testifying at a trial to decide whether he defamed a British diver whom the Silicon Valley billionaire called "pedo guy" on Twitter.