There is an alphabetical list of TED Talks topics available on the non-profit organization's website. The alphabetical list also includes the number of talks that are available for viewing under each topic.
TED, which is an acronym for technology, entertainment and design, is an idea-spreading organization that started in 1984. The talks available on the site have grown beyond just the three original topics, and cover a wide array of subjects in over 100 different languages.
The topics on the site are open to anyone and everyone around the world. The organization also offers a global community titled TEDx and an education series titled TED-Ed.