From the National Science Foundation comes the National Science Digital Library (NSDL), a vast collection of online resources and tools that support innovations in teaching and learning at all levels of science, technology, engineering, and mathematics education. While browsing through its virtual halls, students and teachers will have access to thousands of internet resources and research documents individually reviewed and approved for use on the site by NSDL staff. The library supports teaching and training at all levels with materials ranging from journal articles, to lessons plans, to interactive animations and question-and-answer services for students. The idea, according to NSDL organizers, is to build a virtual hub where educators can easily access the best, most relevant, and most reliable teaching materials from a variety of public and private institutions, including universities, museums, publishers, government agencies, and professional societies. Educators are encouraged to use the site for sharing documents, exchanging ideas, and making recommendations to their peers. From simple mathematics equations to the science behind the Human Genome Project and the location of the best online virtual field trips, this digital library is a vehicle for stimulating excitement about the educational value of scientific information.