By Jeffrey Dastin and Paresh Dave (Reuters) -Google research manager Samy Bengio on Tuesday said he is resigning, according to an internal email seen by Reuters, in a blow to the Alphabet Inc unit after the firings of his colleagues who questioned paper review and diversity practices. Though at least two Google engineers had earlier resigned in protest of the dismissal of artificial intelligence (AI) researcher Timnit Gebru, Bengio is the highest-profile yet to depart. Google and Bengio did not immediately respond to requests for comment. Bloomberg earlier reported the news. A distinguished scientist at Google, Bengio spent about 14...