Sometimes visions can be our own subconscious garbage coming out to the surface and sometimes they can be real psychic visions. There are methods to tell the difference.
Regardless, please be careful about trying to save the world based on every psychic impression you receive. This can be dangerous. We also have to be careful about playing God. If I did that, starting many years ago I would have created many issues for myself.
I have an acquaintance that spent three days in jail because he had some specific details about a murder case. The cops thought he was a little “too accurate.” He had to prove his intuitive ability before they would let him out.
Hope this helps.