A TED Talk is something that has become quite well-known on the internet. All around the world, people give a 20-minute (or less) talk in front of an audience which is filmed and then posted on YouTube.
Here is mine: https://www.youtube.com/watch?v=E5TIpQsOAHU
And it’s also on the first page of my web site: https://eatingless.com
I hope you find it useful.