“ A zero-emissions US is now pretty cheap “

[pdq]

I still don’t get “mining bitcoin”. My understanding is that they are searching for primes or something? I understand that can be useful in cryptography, but for a distance, it looks more like busywork that is poorly related or unrelated to the value of the bitcoins awarded.

So, a lot of computing power (and electricity) is used inefficiently in the pursuit of something that looks a lot like a speculative bubble.

But that’s my admittedly undereducated view.