You are free to use these images for non-profit educational purposes, but we ask that you give credit to the copyright holders who retain rights to the images. These works are licensed under a Creative Commons Attribution-Noncommercial 2.5 License.
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
The licensor cannot revoke these freedoms as long as you follow the license terms.