Back in 2007, Brady Haran was making short films on science for the BBC and the University of Nottingham. Some of the material – scientists talking about their work in an informal setting – was uploaded to YouTube under the name “Test Tube”. The next year, he teamed up with Professor Martyn Poliakoff to make short videos about each chemical element. The “Periodic Videos” YouTube channel branched out to discuss molecules and other chemistry-related topics, and has earned praise from scientists, educators, and the media. Haran has branched out; he now has over a dozen channels covering everything from word origins (Words of the World) to psychology (Psyfile) to the history of science (Objectivity).

The above video is from 2009.

I’d have put caffeine on the tree, myself…….