End of year package. Graphic shows a selection of key events that took place during 2012. Events and people in the public eye included the ongoing civil war in Syria, and presidential elections in Russia, France and the United States. China gained a new leader, Xi Jinping, while in Egypt Mohamed Morsi made history as the first elected leader of an Arab state. Scientists in Switzerland discovered a new subatomic particle thought to be the elusive Higgs boson, NASA deployed the Curiosity rover on Mars, and Felix Baumgartner jumped from the edge of space. Silent movie The Artist triumphed at the Oscars, while summer in Britain was dominated by Queen Elizabeth’s Diamond Jubilee and a successful Olympic Games.