One of the most important things in the universe is CAUSE, the second most important is EFFECT.
These two things can never be separated and as we continue to demonstrate. We do really bad at remembering this.
So we are told our burning of fossil fuels is causing global warming on an unimaginable level. It might even be true. But lets face it, the world needs fuel, we use it for everything we do.
Thats the Cause... But we are struggling with its Effect. So lets do what is truly appropriate.
Most appropriate is to stop and ask, define what is fuel. Sticking with hydrocarbons obviously is not serving us very well. That being said, Hydrogen is the most abundant element in the universe and we know how to make it. We would be best served by building a hydrogen economy, not a hydrogen industry. Humanity shouldn't need anything more than water, any water. We should be able to drive down to the ocean and top off our tank. Crazy way to combat global warming and I'm not saying it would do that but it just might help to offset rising sea levels. Mind you I'm recommending it not for that but as our fuel source.
Its time we designed and coupled our technologies with a symbiotic and global mindset, to think larger then just local. I would argue we need to think even larger than global. Continuing to harvest what we use and need from the bowels of our own planet is not the foundation for an intelligent species. And as much as I would like to spill everything I have come up with about a Hydrogen Economy lets instead talk about this.
Harvesting an asteroid belt, that strikes me as the hallmark of an intelligent species.