An outdoor, interactive science museum has opened along San Francisco's waterfront, offering visitors both toys and tools to explore scientific principles. The Outdoor Exploratorium at Fort Mason, a historic military post established in the 1860s, takes advantage of the natural and man-made landscape.

By Mary Anne Ostrom, San Jose Mercury News, Calif. May 12--Alcatraz may not have been a model for prison reform, but it's an ideal 21st century laboratory for the green revolution.