%0 Journal Article %T Twenty years of progress: GIScience in 2010 %A Michael F Goodchild %J Journal of Spatial Information Science %D 2010 %I %R 10.5311/josis.2010.1.2 %X It is 20 years since the term ˇ°geographic information scienceˇ± was suggested to encompass the set of fundamental research issues that surround GIS. Two decades of GIScience have produced a range of accomplishments, in an expanding literature of research results as well as in the infrastructure of research. Several themes are suggested for future research, based both on gaps in what has been accomplished thus far, and on technology trends that will themselves raise research questions. %K geographic information science %U http://josis.org/index.php/josis/article/view/32