Copyright law covers any original works found on the internet. While some seek to make more works freely available through partnerships with libraries, longstanding copyright laws still restrict access to many works. Efforts are being made to identify works in the public domain and to make "orphan works" whose owners can't be found more available. As educators, it's important to understand fair use and when permission is needed to use copyrighted materials in teaching. The TEACH Act provides additional rights for educational uses, but one should also consider implied and express licenses as well as the four fair use factors to avoid infringement and penalties. Seeking permission from rights holders is recommended when other options don't apply.