welcome to world news. tonight, proof positive? stocks surge on new optimism from the fed chairman, and new signs tonight or a housing rebound. losing luster. our latest abc news poll shows a significant slide in support for the president s health care reform efforts. bill s due. the first atlantic hurricane on the season is now barrelling toward the east coast. sex test a running controversy. why even the doctors aren t sure that she is not a he. and, 80 years with man s best friend. charlie gibson and a very special anniversary for our charlie gibson and a very special anniversary for our persons of the week. captions paid for by abc, inc. good evening. we begin tonight with some very encouraging numbers in a housing market that s been in a virtual stand still for some time now. something we haven t seen in four years today. four-straight months of existing home sales going up. houses sold in july at more than 5 million homes, extending a winning streak that b