There are summer suits and sports coats that are unlined or half -lined (e.g the sleeves are usually lined for ease of wearing and removing).

I did a similar project at 18. Needless to say I didn't have enough HW and SW skills to do much since I implemented the most naive form of the TDOA algorithms as well as the most inefficient way of estimating the time difference through cross correlation. I still learnt a lot and it led me to eventually getting a PhD in SAR systems, which are actually beamformers using the movement of the platform instead of an array

And Armenian, which is also Indo-European and uses its own alphabet

Awnings are very standard in Switzerland, almost every balcony has one, in addition to exterior blinds on all windows.

There's even "passive cooling" (called thermal mass activation) where you circulate groundwater through the floors/ceiling or concrete walls to cool them down. Ideally combined with a geothermal source heat pump to recover the waste heat dumped to the ground in the cold season

In Switzerland most offices and the majority of houses have exterior metal slat blinds or rolling shutters. Almost all are operated electrically and quite a few are controlled by inputs from wind and sunlight sensors. Since you can adjust the angle of the slats you can significantly cut down solar gains and glare while still providing ventilation and natural light

Count me in the club of failed scientists. In my case it was the geosciences, I would spend hours trying to make all my analysis reproducible and statistically sound while many colleagues just published preliminary simulation results obtaining much more attention and even academic jobs. On the flip side, the time spent improving my data processing workflows led to good engineering jobs so the time wasn't entirely wasted

I've had both hypnagogic hallucinations and night terrors a lot when I was younger, up until my early 30s. They almost disappeared now, which I can't really explain. For me the worst were the hallucinations, the most recurring one was seeing a dark figure abseiling from the ceiling or from the window, which after waking reveals to be a ceiling lamp or a curtain. It's terrifying stuff while you experience it and I even broken stuff in a desperate reaction of throwing objects to defend against the "intruder"

I'd love for the list to contain location information, something like the country or general area. I feel like I have a lot to learn from a good mentor but it's hard to find then

Ensemble kalman filter (and similar techniques like variational assimilation) are also used heavily in the geosciences to assimilate measurements and model data in order to obtain a "posterior observation" which can be understood intuitively as an interpolation between model and observation weighted by their relative uncertainty (and covariance)