If you could invent one thing to help mankind, what would it be Journal

If you could invent one thing to help mankind it would be a way to have unlimited oil. I would do that so that gas prices will be cheaper and we wouldn't be worrying about running out of it. It would have a positive effect on the fact that people could get to places without whining about prices and even though it would be unlimited prices would still have to be at a steady rate so that it doesn't get out of hand. This is something that I would invent so that the world be a more easier and a better place.