Bronwyn / KANACKI, discerning either positive or negative energy within a specific area, building or even a person can be ascertained, without actually being on the land, in the building or in a person.
I have, over the last few years, trained myself to be able to distinguish positive or negative energy at a distance; the biggest obstacle is to train the spirit to work in the "spirit world" and not the physical world.
The above does not work successfully 100% of the time, but when all is in alignment, it is a wonderful experience.