[sbierwagen]

It won't get 1000x cheaper in terms of energy inputs, no. There are many different things you could do to make it economically 1000x cheaper, though. Redefine the US dollar in units of sequestered carbon, for instance. Self-replicating carbon sequestration units, if you like science fiction. Etc etc

[sa1]

> Self-replicating carbon sequestration units, if you like science fiction

That's just trees.

[adrianN]

Technically you need someone to cut the tree down, turn it into a stable form of carbon (say biochar), and bury it. Otherwise most (all?) of the carbon captured will be released fairly quickly after the tree dies.

[sa1]

And captured back by the next generation of trees. Carbon sequestered remains stable(generally) in forests.

[comboy]

I must say I'm quite impressed with creativity of redefining US dollar as a means of making something cheaper.