The above video was posted one day prior to a major, much-publicized experiment, tracing water movement in California's Sacramento-San Joaquin river delta, which is prone to reversals in the direction of flow. A more polished video produced on the occasion of the launch of 100 floating sensors into that river system appears after the break. The Floating Sensor Network is a project of the University of California at Berkeley, involving the Lagrangian Sensor Systems Laboratory (LSSL), the Lawrence Berkeley National Laboratories (LBNL), and the California Department of Water Resources.

Video produced by the Center for Information Technology Research in the Interest of Society