The Center for Learning In Virtual Environments (CLIVE) is a collaboration between The Center for Advanced Technology in Education (CATE) at The University of Oregon, Sun Microsystems, and MERLOT to create two complimentary spaces - here on the World Wide Web and also within 3D space - for comparing, contrasting, and informing educators about the potentials and challenges for learning and teaching in Multi-User Virtual Environments. CLIVE is partnered with The Media Grid's Immersive Education project - an initiative to develop a universally accessible open source interface and repository for educational learning materials developed in 3D Virtual Worlds.