In the six examples discussed and illustrated here, innovative decisionmakers -- public and private -- have used earth-science information to avoid areas with geologic hazards, protect natural resources, and reduce possible property damage in the San Francisco Bay region. The examples show how: 1) development in fault-rupture areas is regulated, 2) potential waste-disposal sites are identified, 3) aquatic and wildlife habitats are protected, 4) site investigations are required in hazardous areas, 5) supplemental building standards can be applied to unstable baylands, and 6) hazards are disclosed to real-estate buyers.