P123 ORACLE 123 Tue25 Dec ITV 1830:10   AROUND THE WORLD  AT CHRISTMAS   Brazilians are flocking to the beach bfcause of a Christmas heatwave which weathermfn say could hit 100 degreesN  Nobel peace prize winner Mother Teresa of Calcutta is in Ethiopia to visit victims of the famineN  More than 8,000 Catholics went to Mass in Peking at two churches now restored after the Cultural RevolutionN  Michigan, USA, union officials are to fight the sacking of a postman who delivered unstamped Christmas cardsN  In California, a 6ft Christmas tree has been placed by the grave of "ghite Christmas" crooner Bing CrosbyN