I've been told that our previous wars were about oil. Nothing is that simple. All wars have a multitude of causes, many of which we don't know or can only guess at. But I think the wars of the future will be fought over water.
It's already happening. L.A. is out of water so it eyes the water of surrounding communities and states and tries to get it. Texas and Oklahoma have battled over water rights for years. The prairie states are taking water out of aquifers faster than it can be replenished. My own town is attempting to gather support for building a lake for water for when our wells go dry.
It's worse overseas. Yes, we can make the desert bloom, but should we? And don't the people who live there have a right to water?
Most people don't realize that we have yet to come up with an affordable solution for making ocean water safe to drink. We can do it, but it costs a lot, and it uses a lot of energy, particularly as we pollute the ocean. We humans are incredibly short-sighted. We leave the problems for our descendants to solve. They will curse us.
And we will deserve every single curse.