Polymer dispersed liquid crystal glass door goes from frosted when powered off to clear when powered on.
Robotics engineer posted this to make a point that robots are "faking" the humanlike motions - it's just a property of how they're trained. They're actually capable of way weirder stuff and way faster motions.
The termite queen lays eggs 24/7 for 25 years. That's some incredible feat. It's tough to imagine being built to do that for so long.