Ted Talks Channel is not working. I get "This channel is not responding."
There is an issue with the URL service (the backend code that makes the videos play). They changed their URLs from https to http and that is what is causing the channel to fail.
Here is the Github pull request - github.com/plexinc-plugins/Services.bundle/pull/980
There appears there was already an update to this channel that fixes this issue, but part of that fix did not get updated through Plex. (https://github.com/plexinc-plugins/TED-Talks.bundle/commit/750ac007031f838ab212b0dfd23491042dbf2f5f).
Due to recent changes in the Plex Channel Directory, updates that are made to channel plugins are taking much longer to get through the system and added to user's local Plex Media Server.
This issue should be resolved now.
The updates for the Ted Talks channel plugin bundle are updated now.