 Delta-Optimist | Abhishek becomes brand ambassador of WEH Oneindia Abhishek Bachchan is known to be very closely associated with social causes. The actor has just been appointed as the brand ambassador of WWF's World Earth Hour scheduled to take place on March 27 2010 between 8:30-9:30 pm World Earth Hour started in ... Lights out! Earth Hour back in Delhi Abhishek Bachchan: It's time to switch off the lights Save power, save earth |