Each year, thousands of scientists from around the world conduct field research in the protected landscapes of the Natural Reserve System. The NRS draws investigators for many reasons. This network of natural landscapes represents a living library of California’s diverse ecosystems. Reserve lands are protected over the long term, enabling researchers to conduct experiments without fear of the land or their equipment being disturbed. Data archives enable scientists to build on decades of previous research. Overnight accommodations, laboratories, reference collections, Internet access, and other amenities make field work more comfortable and productive.