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In this paper, we discuss gigabit network applications enabled by "Mission to Planet Earth," an international effort to monitor the Earth as a system. We describe the design of a network architecture to support applications developed as part of this program; introduce a new component, public access resource centers (PARC9s); and discuss how PARC's would facilitate access by users outside the traditional research community. We also describe how a particular class of users, agriculture users, might to Planet Earth program and delivered in a value-added form to them by a so-called AgPARC. The suggested architecture requires the deployment of high-bandwidth networks.