There are many concerns globally.
But there are 3 primary concerns that will fix all the 'many' concerns and fix the planet (not immediately, but will set it on 'course correction').
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1. Free energy. ('Free' energy does not = FREE, it means renewable, water/hemp/solar/etc)
Start from Tesla and look into how many scientists have been silenced/killed/work stolen by governments (controlled by banks)/discredited/etc, etc. And how free energy would free us from dependence on fossil fuels (of which the depletion is destroying our planet), and the fossil fuel 'masters' are a big part of the problem (hiking up prices, etc, to keep people subjugated).
2. Natural medicine.
The whole shitty 'war on drugs' was a total farce and a means for big pharma/banks to control the masses (if they could tax/sell air, they would). Natural medicine (e.g. growing your own medicine with a seed put in mud in your back garden) would massively destroy the damn corruption, huge sections of corrupt police feed of the war on drugs, as do banks and politicians.
3. The fiat system (this is the 'primary' primary).
Well, ye, bitcoin
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Personally, though I won't be nearly as wealthy as others (coming into btc quite a bit later), the wealth I will have (assuming btc continues as we see) will be put towards pushing/supporting 1 of these.
Once these issues are fixed then the others will be much easier to fix.