Hacker News Reader

You can't eat sunlight or the wind either yet both seem pretty useful.

And where do you plant the crops or build the wind turbines and solar plants to harness these?

You're begging the question here. Currently we need land for these but that can change.

No, I'm simply asking the inconvenient question, that's different. How can it change?

And to add, and where do you get the materials to build the wind turbines and solar plants?