Mick Cash has been elected general secretary of the Rail, Maritime and Transport union to succeed Bob Crow, who died earlier this year, the union announced.
More top news
Facebook came under fire for the spread of a live stream video showing the New Zealand mosque shootings in March, which left 51 dead.
Sybil, the African spurred tortoise, went missing 15 months ago but was finally reunited with owner Catherine Painter on Saturday.
Ryanair pilots are set to strike this week as a dispute with the airline continues.