The Teachers' Domain Life Science Collection is a collaborative production of WGBH Educational Productions, the WGBH Media Library, and WGBH Interactive. Major funding for this project is provided by the National Science Foundation. Teachers' Domain Life Science is a collection of the National Science Digital Library.
This material is based upon work supported by the National Science Foundation under Grant No. 0121636. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.