LOS ANGELES (Reuters) - Beyonce, Jennifer Lopez and Florence & The Machine are teaming up for a four-hour charity concert in London next month to benefit women's health and education projects around the world. The "Sound of Change Live" concert on June 1 in London's Twickenham sports stadium could fund at least 120 projects supporting girls and women in more than 70 nations, if all the tickets are sold, organizers said on Wednesday. ...