looking to develop vaccines against new and emerging diseases such as lassa fever or the marburg virus. if the plague study goes well, then scientists aim to conduct further vaccine trials in africa in the hope of curbing one of the biggest killers in history. fergus walsh, bbc news, 0xford. the man known as the �*godfather of sudoku', has died at the age of 69. maki kaji was a japanese puzzle enthusiast who popularised the number game, coming up with its iconic name in the 1980s. after newspapers begans printing it in the early 2000s, the puzzle became a worldwide craze, with tens of millions of people testing their mental agility with sudoku every day. nick baxter is the captain of the us sudoku and puzzle teams. he told me about the