Aluminum is the fifth most common element on Earth, and is naturally present in pretty large quantities in soil.

Are you sure you aren’t confusing it with lead?

Isn’t that what Unreal Engine has?

I’ve also heard it referred to as “source available”.

Yeah, probably? I haven’t read the books, but I guess they have explanations of how they strengthen it.

You could do what they do in The Expanse. Spin the planet fast enough that you have artificial gravity, and build upside-down housing as you now fall away from the center.

Not to defend billionaires, but this post sets an incredibly low bar. I imagine that all people, billionaires included, have done something good in their lives.