Short answers, pulled from the story.
The National Science Digital Library opened its digital doors in 2000. The National Science Foundation created this online archive to gather science and math materials for schools and public learners.
Cornell University, Columbia University, and the University Corporation for Atmospheric Research launched the project together. Operational responsibility shifted entirely to UCAR in Boulder, Colorado.
The Institute for the Study of Knowledge Management in Education incorporated NSDL into OER Commons as a Hub during 2024. This organization took over hosting duties from UCAR in 2014 before merging the library into the new hub.
The National Science Foundation sponsored an NSDL grant-making program from 2000 until February 2011. Funding supported major collection-building efforts, services development, and targeted research within the Division of Undergraduate Education.
The organization operated the NuclearFiles.org website as an online archive from the late 1990s through 2023. The site served as a dedicated repository for nuclear-related educational content before closing permanently in 2023.