To make this site work properly, we sometimes place small data files called cookies on your device. Most big websites do this too.

What are cookies?

A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size, and other display preferences) over a period of time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another.

How do we use cookies?

Our website uses cookies to remember some of the preferences set by you during your visit.

They all expire within a few hours from the first access or when you leave the website.

The only cookie we might store (for a period of 4 months maximum) sets the preference for the chosen language of browsing.

By accepting this cookie to be installed, you agree on having the cookie saved on your computer.

By refusing it, it will expire when you leave the website and no information will be saved.

Enabling this cookie is not strictly necessary for the website to work but it will save you from setting the language preference once again when you come back to TED website.

These cookies are not used for any purpose other than those described here.

How to control cookies

You can control and/or delete cookies as you wish – for details, see You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.

You can easily accept or reject the cookies on this site by choosing one of the following links: I accept cookies / I refuse cookies .