3 ms·

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

• igorkraw 4y ago
  And where do you plant the crops or build the wind turbines and solar plants to harness these?
  • andrewjl 4y ago
    You're begging the question here. Currently we need land for these but that can change.
    • igorkraw 4y ago
      No, I'm simply asking the inconvenient question, that's different. How can it change?
  • prichino 4y ago
    And to add, and where do you get the materials to build the wind turbines and solar plants?