You see them on roads in the UK and Europe: The device is called “cat’s eyes”. The two circles in the “face” of it are cheap glass spheres - which act as “retro-reflectors” so as you’re driving along at night, they reflect the light from your headlamps back at you - and they appear to glow. They can be colored to produce red or green reflections - but are mostly white. Now - by itself - this doesn’t seem especially clever.. but when you look into the simple design it’s absolutely amazing! Firstly,...

Here’s a rewritten, irony-laced, third-person version: Ryzan, yet again this month, saw an unmanned aerial vehicle gracing the oil refinery—for a second time, because apparently novelty wears off after the first attempt. A mere 460...