Mildred Warner is a Professor in the Department of City and Regional Planning at Cornell University. She is an international expert on local government services, how to plan for more child and age-friendly cities, and how local governments promote economic development and environmental sustainability. She has conducted extensive research on privatization and other market-based approaches to public service delivery in the US and internationally. Her research showing lack of cost savings with privatization won the Best Journal Article Award in 2010 from the Academy of Management (Public and Nonprofit Division). She wrote the first academic article on SIBs in the US in 2013 and was featured in the international documentary on SIBs, The Invisible Heart, released in 2019. Her research on SIBs finds they fail to deliver on their promises. SIBs rarely increase funding for services. SIB performance metrics actually narrow the range of innovation; and the use of SIB finance schemes has the potential to undermine social rights. Her research can be found on her website www.mildredwarner.org