I have several machines on Win 7. For two uses (gov't related) I have Win 10. These may be upgradable but have not checked. I use Linux for most stuff.
I think the “solar oven” that Edmund Scientific sold decades ago could easily reach 1000 C at the focal point of its Fresnel lens. Anyway, hard to imagine a steel mill that only works in the daytime on sunny days. 8 hr startup time and then shut down for the night.
My vote is still for oil, coal, nuclear reactors and deep geothermal. Fusion maybe someday. Plenty of valid options without wind/solar crap.
I think my parents got the World Book set when I was around 9. They had a really old encyclopedia (Source Book) that I loved because of the old pictures and articles. There was also a huge, also old, one volume encyclopedia that actually had things like a schematic of a 1930s vintage radio, etc.
I remember when I was a little kid dreaming of the day I could read a newspaper or a book. I’ve always loved reading and there’s always a stack of books beside my chair and bed.
Aircraft under the FAA’s 14 CFR Part 103 ultralight category does not require a pilot’s license to fly. There are helicopters, fixed-wing planes, and gliders that fall under this category.
I got my SEL pilot's license in the '70s. Had a 4 place fixed wing plane for a couple of years and then I got married. Sold it and started to build a Benson gyrocopter (would be under 14 CFR Part 103 I think). I got it done up to the point of adding the engine. Then I took a serious look at it and sold it. Never heard any more about it.
An apartment I had in college was infested with cockroaches. We’d have to cycle the toaster in the AM to get them out before making toast. If we’d known better we could have left them in there and had cockroach toast. Yum.