[asdff]

Future generations will blame us for damning them out of rare earths to build yet another cellphone. This is like us today with severely diminished whale populations just so Victorians could read the bible for another 2 hours a night. Was it worth it? Most would say no, save for the people who made a fortune off of it I'm sure.

[deepspace]

That makes no sense whatsoever. We are not consuming rare earths; only moving them from one place to another.

Arguably, future generations would find it easier to mine them from former landfill sites, where they would be present in concentrated form, than from some distant mine in the middle of nowhere.

[asdff]

Will the NIMBYs of the future allow for rare earths processing in long defunct landfills that in the future are surrounded by residential development? These urban landfills even today really aren't far from civilization. In fact they have been enveloped by civilization in many cases.

I mean as it is you can't even recycle most things if they are the least bit soiled since it is not economically viable to implement a cleaning process. We are doing a whole lot of assumptions that our future members of our species will have solved a way to reliably get pure rare earths from a mixed up slop of everything in a landfill. Whatever they possibly figure out is going to probably be far more challenging than ore refining processes we use today.

It might be cheaper/easier to try and capture an asteroid than to refine a landfill.

[hshdhdhehd]

Why not do that now?

[jandrese]

It's called recycling.

As long as the "virgin" sources are super cheap its not worth it, but the market can change.

[_factor]

Sounds mighty expensive if not impossible for extraction.

[kergonath]

> Future generations will blame us for damning them out of rare earths to build yet another cellphone.

We’ll be out of many elements before we run out of rare earths. They are not actually that rare, they are mostly inconvenient to extract because they are distributed everywhere as minor elements rather than concentrated into ores. Things like cobalt, nickel, the platinum group metals, or even copper, are more worrying from a sustainable production point of view.