Alexandria digital library (University of California Santa Barbara) [1] aims at developing a globally distributed georeferenced digital library. Research is focused at the development of distributed, peer-to-peer digital library architectures and production-ready software, design, implementation, and evaluation of real-time 3D interfaces for visualizing geospatial digital library content, development of an integrated learning environment based on ADL geospatial digital library technology, investigation of technology-supported learning, focusing primarily on the classroom use of ADEPT by examining its impact on student learning and teaching behavior, formalization of the structure and services of Knowledge Organization Systems and integration of KOS into digital libraries and investigation of methods of deriving georeferencing by placenames and references to places from text
DLESE, The Digital Library for Earth System Education is an effort involving educators, students, and scientists working together to improve the quality, quantity, and efficiency of teaching and learning about the Earth system at all levels. The project provides access to high-quality collections of educational resources, access to Earth data sets and imagery, including the tools and interfaces that enable their effective use in educational settings, Support services to help educators and learners effectively create, use, and share educational resources and Communication networks to facilitate interactions and collaborations across all dimensions of Earth system education