Mostly on vintage electronics. Lots of focus on microwave, which he has worked a lot with.
Has been going wild with restoration and reverse engineering of the Apollo moon mission.
Video 1. Inside the WILD Lab of CuriousMarc by Keysight Labs (2022) Source.
Marc Verdiell is a human electrical engineer best known for being the creator and host of the CuriousMarc YouTube channel.
Marc made $58.4 from the sale of LightLogic, an optoelectronics company he founded, to Intel in 2001:
Figure 1. Marc Verdiell at the Computer History Museum. Source. Location inferred from Marc's videos', but likely, he often frequents the place, and it looks a bit like that.
Video 1. Profile of Marc Verdiell by Gizmodo (2018) Source.
youtu.be/tJ2-kkhghD4?t=74 gives his house's location Atherton, California, part of Silicon Valley. youtu.be/tJ2-kkhghD4?t=279 shows his amazing garden a bit more.
A quick look on Google Maps show that that area is full of some incredible mansions. They managed to keep the entire place green, every house has a pool. Wikipedia comments web.archive.org/web/20220906010554/https://www.forbes.com/home-improvement/features/most-expensive-zip-codes-us/:
Atherton is known for its wealth; in 1990 and 2019, Atherton was ranked as having the highest per capita income among U.S. towns with a population between 2,500 and 9,999, and it is regularly ranked as the most expensive ZIP Code in the United States [(94027)]. The town has very restricting zoning, only permitting one single-family home per acre and no sidewalks. The inhabitants have strongly opposed proposals to permit more housing construction
. and Forbes confirms it for 2022: web.archive.org/web/20220906010554/https://www.forbes.com/home-improvement/features/most-expensive-zip-codes-us/, by far on top.
youtu.be/ZgAreiFXhJk?t=253 lists some famous people who live there. It's like a micro heaven.
And a person who makes open educational content like Marc, truly deserves it.
Video 2. Soyuz Clock Part 4: How accurate is it? by CuriousMarc (2020) Source. The timestamp youtu.be/HKsjwT53yXw?t=580 mentions that his wife is called "Laurie", and that she escaped the Soviet Union, and two of her brothers went to jail in the escape process.