Facebook founder Mark Zuckerberg announced on Facebook (of course) the good news that he and his wife, Priscilla Chan, are expecting a baby girl. He also revealed that the couple experienced three miscarriages before this pregnancy and expressed the desire that sharing their story would give hope to others in similar circumstances. “Most people don't discuss miscarriages,” he wrote, “because you worry your problems will distance you or reflect upon you - as if you're…  [more]