If you could make one thing free (something that's worth money), what would it be?

Energy?

@BlackBloodDemon: The kind that keeps the lights on.

@BlackBloodDemon: a lot can be done with free energy

@Fangirlsarah1996: or air conditions and heats a house, or warms and lights a greenhouse.

@Fangirlsarah1996: I see

@cherokeepatti: That's why we should switch to solar panels.

@cherokeepatti: Just an example "Keeping the lights on" is a good way of saying "That energy" instead of going all science geek.

@BlackBloodDemon: What about geothermal and wind energy...