My generation will be judged by its response to the HIV/AIDS epidemic and to the widening health disparities between and within countries.

On a recent trip to Uganda, Jessica Greenberg visited an internationally financed HIV/AIDS research center. It was fully staffed, well-equipped and clean. But just across the dirt road sat a government-funded district hospital. It had broken windows, minimal medicines and only two doctors. "Patients waited hours or days," she recalls. "The staff were unable to tell me what prevention or treatment options for HIV/AIDS were available within the community."

As executive director of Global Health through Education, Training and Service (a nongovernmental organization that promotes health in developing countries), Greenberg has often witnessed the disconnect between well-financed research centers and poor health delivery for communities. Her goal is to reinvent public health systems so they are more accountable to the people they serve. She is coming to the Bloomberg School to gain new tools and build upon her experiences in health.

"The health challenges of today and tomorrow cannot be solved by medicine alone," Greenberg says.