Quick Tech Tip: In a previous post (November, 2010) I suggested using Zamzar to download TED videos. Since then TED has added this functionality themselves. Below the video, click the “DOWNLOAD” button.
That will call up this window.
Right-click on the version you want, and select “Save link as…” Choose where you want to save the file, and the video will be saved on your computer. No need to have an internet connection to watch it. Save it in your Dropbox folder to have it available on all of your devices.