It's a billion dollar business that begins with an act of generosity: When someone or their family agrees to donate a person's body, for free, after death. When they click the “donor” box on their driver's license application, most organ donors don't realize that they have also agreed to donate their tissue. They've made a legally binding promise that a private company can take skin, bones, tendons, ligaments and anything that's not a living organ—and turn it into for-profit medical products. In a four part radio series that aired in July 2012, NPR Correspondent Joseph Shapiro highlighted this little known industry and the shortcomings in regulation that raise concerns among donors, medical professionals, and government officials at many levels. The series was part of a collaboration between NPR's Investigative Unit and the International Consortium for of Investigative Journalists, a project of the Center for Public Integrity.