President Obama's National Security Adviser says global economy will be focus of this weekend’s G8 summit. Secretary of State Clinton welcomes Burma’s foreign minister and says US is suspending economic sanctions on Burma. Facebook makes it trading debut on Wall Street with starting price of $38 per share. Kentucky businessman buys all the merchandise of a closing K-Mart store and donates it to charity Eight-meter high statue of Marilyn Monroe is center of attention in Palm Springs, California. Fans mourn the death of disco diva Donna Summer at 63.