Marsha - Vertical Martian Habitat
This is an interesting video showing the NASA-awarded 'marsha', a 3D-printed vertical martian habitat. While it looks weird, the science behind it appears to be sound and reasonable. https://youtu.be/XnrVV0w2jrE
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Nixie Tube Story
This is an incredibly interesting article and video about the history of the "Nixie" tube, which is the forerunner to the LCD display. I remember seeing these things in all sorts of devices when I was a lot younger. The video which is towards the end of the article shows the process to hand make a new Nixie tube. https://spectrum.ieee.org/tech-history/dawn-of-electronics/the-nixie-tube-story-the-neon-display-tech-that-engineers-cant-quit
