Yeah, one of the issues I’ve read about happening for concrete failures was that some construction crews are under enormous pressure to salvage concrete that had been mixed too early, or delayed in pouring, or whatever, and where the concrete pouring characteristics cause issues (or crews add unauthorized water or things to slow down curing and then alter the characteristics of the poured concrete without the engineers’ awareness).

It’s wildly counterintuitive to those of us who don’t work in the space.

Yeah, the most prominent examples:

Motorola spun off its cell phone division (despite being the company that invented the cell phone and the clamshell cell phone) and sold it to Google, who sold it to Lenovo. So Motorola phones, under the Motorola Mobility name, don’t have anything to do with the radio and electronic equipment company that is currently known as Motorola Solutions.

Volvo spun off its car division and sold it to Ford, who sold it to Geely, and kept the truck business. So Volvo trucks are made by a different company under different ownership from Volvo cars.

River sand is the right amount of jaggedness to where it can pour and settle into the right density in cement to have the right strength in the finished concrete. Ocean/beach sand works, too, but needs to be rinsed with fresh water, and is usually pretty valuable where it is (for beach resorts and what not).

They’re testing for how to use different types of sand (desert sand, manufactured sand, recycled sand) and testing the pouring characteristics and resulting concrete strength, so that they can make reasonable decisions on when it’s worth using substitutes.

Exactly.

The whole reason why lithium is such a good material for cathodes in car batteries is because of its very low mass per cation. So for a Lithium Iron Phosphate battery, the the cathode material is LiFePO4, where the Lithium itself is only 4.4% of the overall mass of the cathode.

So it’s important to remember that although the lithium constitutes a small amount of the total mass of a battery, that swings both ways so that not much is actually needed to build the next battery out of recycled materials.

Your solar power storage expert is named Sun? Sounds lot like sun.

Maybe that’s why she became a solar power storage expert!

they could have bought a <$25k used EV last year and saved $4k with the EV tax rebate.

The people who were in the market for a car last year are by and large not the same people who are in the market today.

Plus let’s not forget, the actual EVs on the used market 12 months ago were different than today’s. Someone looking to buy a 3-year-old car today has to look for something originally sold in 2023, whereas 12 months ago they were looking at 2022 vehicles, with fewer models available and significantly fewer vehicles actually manufactured and sold.

For everything the Trump administration has done to make solar and wind power less economically feasible, it turns out his war in Iran has done way more to make fossil fuel consumption less economically feasible as well.

There really was a huge increase in the number of EV models available between model years 2018 and 2023.

So now, when you’re looking to buy a 3-year-old car, you have so many more EV options to choose from even compared to just 2 years ago.

You can choose different form factors (small cars, sedans, wagon/crossover/small SUVs, medium SUVs, literal pickup trucks), and basically any price tier from economy to ultra luxury high end.

Not every ecological niche was filled in the past 5 years, and some still need a bit more competition, but even with some pullback over the last year there are still plenty of new EVs hitting new categories (e.g., true three-row SUVs and minivans) that will feed into tomorrow’s used market.

And not every model will survive. The future of all-electric full size pickups looks pretty grim. Some entire companies might not survive the EV transition (looking at you, Honda). But overall, the used market will fill out with what was hitting the new market 5-10 years ago, and we’ll start to see a lot of consumer preferences start showing what the future of cars will look like.

goshery store