Technical Help

Viewing QuickTime Movies
To view video content on this site, you need to have a current version of the free QuickTime player. You may download and install this, by visiting the Apple Web site at

Downloading QuickTime Movies
Some of the QuickTime movies on this site may be downloaded to your computer, saved and shared. Instructions for downloading will be provided when you click the “download” video button on the site page.

Using Interactive Features
To experience the interactive features on this site, you will need a current version of the Flash plug-in. Many current browsers have this program built in or it can be downloaded for free at

Viewing PDF Files
This site includes Adobe Portable Document Format (PDF) files. To open and print these files you will need the free Adobe Reader, available from

Viewing Microsoft PowerPoint
This site includes Microsoft PowerPoint Presentations. To open these files, you will need the MS-PowerPoint application or a program capable of opening and reading PowerPoint files.

The Web site is also accessible for blind and low-vision users. To learn more about providing access to Web content for users with disabilities, please visit the CPB/WGBH National Center for Accessible Media on the Web at

Additional Tech Help
If you have a technical question or comment about this site, please contact