As the nation's largest private, not-for-profit source of funds for scientists studying cancer, the American Cancer Society (ACS) focuses its funding on investigator-initiated, peer-reviewed proposals. This process ensures that scientists propose projects that they believe are ready to be tackled with the available knowledge and techniques, rather than working on projects designed by administrators who are far removed from the front lines of research. This intellectual freedom encourages discovery in areas that scientists believe are most likely to solve the problems of cancer.