New Year’s Eve fireworks light up the sky over the Sydney Opera House (L) and Harbour Bridge during the fireworks display in Sydney, Australia, today. The world’s eight billion people have begun ushering in 2023 and bidding farewell to a turbulent 12 months marked by war in Europe, stinging price rises, Lionel Messi’s World Cup glory and the deaths of Queen Elizabeth, Pele and former pope Benedict.