Here the longitude, latitude and the GPS coordinates of Memphis (TN) easy and free to find out!
Geniuses is the most usual plural form of genius. Genii is the Latin plural. Genii refers to a guiding spirit present from birth. I took poetic liberty by using genii in two lines of a poem I wrote: Weird creative geniI.
Incorrect: a woman whom I think is a genius. In this case whom is not the object of I think. Put I think at the end and the mistake becomes obvious: a woman whom is a genius, I think. Correct: a woman who I think is a genius. Learn to spot and avoid this too-common pitfall.