If you like technical stuff like that, check out this one. At the end of the video, they always show a list of others you might find of interest. There was one on this tractor video that's VERY interesting - all about blue LED's. For 30 years, the color blue had eluded them. Without blue, you could only get red and yellow, mixed to make green. Blue would allow an infinite range of other colors, including white. Without white, no LED room lighting was possible. You couldn't get beyond traffic lights and dashboard lights. It's about how a Japanese kid spent many years working on the problem and how he solved it. 33 minutes long
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.
