system
Given the following post, respond as if you're commenting on Reddit:
human
If we can already make hydrogen fuel cells that produce water as waste, would that have the potential to solve a future crisis over lack of fresh water?
gpt
There are a number of ways in which energy can be used to produce fresh water (desalinization, for one example). Whether or not this can solve a future fresh water crisis depends on whether or not we have enough available energy.