I’m convinced that the single best use of our resources at present would be energy research and infrastructure.
Imagine how our world could be different right now if we had a plentiful, cheap, clean source of energy.
Oil rich countries would lose their sway over other nations.
Energy can be used to obtain fresh water and make light. heat, and cold, thus making habitable and farmable nearly any place on the planet. Those places currently struggling for survival would be able to live comfortably and focus on things like education and society, rather than scrounging for food and making war. Educated people tend to have fewer children, further reducing overpopulaton and the problems that come with it.
In recent times, we’ve seen some serious progress on the fronts of solar, electric vehicles, and storage, mostly due to the visionary efforts of Elon Musk. Sometimes when an industry has been colluding to not rock the boat despite advances in technology, all it takes is one powerful spark to ignite a chain reaction of change. We’ve seen other examples of this, like the Android operating system put out by Google, which broke Apple’s model of smartphones being proprietary and charging for things like ringtones and background images, and opened up the writing and publishing of apps to anyone with the skills to do so.