The following is the first of a two-part series by Lance McKee, who helped found the Open Geospatial Consortium and who retired from his OGC staff position last year. In the first part, McKee explores how the scope of public health is broadening and how geospatial technology and location data will play an increasingly important role in health as we build a technology foundation for the “exposome.” In the second part, the author asks readers to consider the mounting evidence that our health and the health of future generations are at risk from the weak electromagnetic fields emitted by our wireless technologies.