Thanks

Since you have expertise in this maybe you can answer this question for me.

Do brick or stone roads last longer than asphalt or concrete roads?

It seems to me like they should, given the higher hardness of the material and the presumably greater resistance to freeze/thaw cycles. I have also seen a few brick roads near me that I can only imagine have gone a very long time with no maintaince (as I think the government here would rather cover it in asphalt than try to work with the bricks). The ground underneath the bricks has shifted over time forming depressions in the path that car tires take, but it is still fine to drive over at low speeds, as the slopes are smooth unlike the holes that form in asphalt.

I’ve tried googling this before but haven’t been able to find a straightforward answer as to how long a road like that can go between rounds of maintenance.

This is an idea from the 1960s back when they thought solar panels would be like computer chips and remain super expensive in terms of area but become exponentially better at the amount of sunlight they could convert into electricity.

It makes absolutely zero sense to spend billions of dollars putting solar panels in space and beaming the power back to earth now that they are so cheap per unit area. The one thing you could argue a space based solar array could do would be to stretch out the day length so you need less storage, but that’s easier to accomplish using long electrical cables.