57. Martine Rothblatt
$340 Million Age: 63 Residence: satellite beach, florida
The ceO of publicly traded biotech firm United Therapeutics, which sells five FdA-approved drugs that treat pulmonary hypertension (a disease that her daughter has), is working to fix the worldwide organ shortage. United Therapeutics is collaborating with a competitor to preserve organs outside the body. it already has a pig “pharm” in Blacksburg, Virginia, that is the world’s largest cloner of pigs and hopes to be a future source of organs modified for humans. Rothblatt’s first success was sirius satellite Radio, which she cofounded in 1990.