Workshop on Sensor Web - On May 15-16 it will be held in Geneva, Switzerland, a workshop on Sensor Web— within the frame of GEOSS, a system created to continuously monitor the state of the earth to gain knowledge and understanding of the earth and its processes. Particularly, this time delivery of earth observation data is a key aspect for identifying potential natural and human threats, such as tornados, tsunamis, wild fires, or algae blooms. Being a system of systems, GEOSS has the goal to master the challenge of integrating heterogeneous systems across institutional and political boundaries. The Sensor Web is a paradigm in which Internet acts as an active sensing macro instrument. This workshop is an opportunity to learn about the Sensor Web concept, its potential and its role within GEOSS; apart form this, it will be possible to discuss scenarios and cases to improve the interoperability between sensor data providers and consumers, to identify standards and best practices, and discuss approaches and applications. The workshop targets all the communities involved with sensors, sensor networks, information logistics, and infrastructures. The organizers are GEO-Task DA07-04 and the European Commission through two integrated projects, SANY and OSIRIS. More information at www.earthobservation.org and to request information please contact: ingo.simonis@igsi.eu