People ride a bus on which an advertisement reads 'There's probably no God. Now stop worrying and enjoy your life', on January 12, 2009, the first day that busses in Barcelona are displaying the athiest advertising campaign. The campaign follows attempts by the British and American Humanist Associations to raise awareness of atheism in London and Washington. Getty Images logo Getty Images 10 months ago

People ride a bus on which an advertisement reads 'There's probably no God. Now stop worrying and enjoy your life', on January 12, 2009, the first day that busses in Barcelona are displaying the athiest advertising campaign. The campaign follows attempts by the British and American Humanist Associations to raise awareness of atheism in London and Washington.