DAVOS/SWITZERLAND, 29JAN10 - Melinda French Gates (R), Co-Chair, Bill & Melinda Gates Foundation, USA; Co-Chair of the World Economic Forum Annual Meeting 2010, speaks, while William H. Gates III, Co-Chair, Bill & Melinda Gates Foundation, USA, looks on, during the 'Bill & Melinda Gates Foundation Pledge' in the Congress Centre of the Annual Meeting 2010 of the World Economic Forum in Davos, Switzerland, January 29, 2010 .