"On Mathematical Grounds" provides a glimpse of life at one of the world's premier mathematical institutes, focusing on its activities, people and programs. The Mathematical Sciences Research Institute (MSRI) serves the world as a center for research and postdoctoral studies and as a focal point for the dissemination of new mathematics and its applications. Over 2,000 leading mathematical scientists from around the world visit MSRI each year. In addition to its research activities, MSRI hosts programs that inform the public and strengthen mathematical education from junior high through graduate school. Support for MSRI comes from government agencies such as the National Science Foundation, the National Security Agency and the Department of Energy; corporations and leading universities; private foundations; and the donations of private individuals.