Community Help: Categories

Thanks for the imput but I see what has happened here. There are several blogs of various descriptions, now, listed under the "World" category. Out of my confusion, a while back you suggested that I list them all under one category and that is what happened. Now if I change one to Health, they will all go into Health, I think.

Is there any way I can take one of those blogs out of the "World" Category and put it in "Health"? Sorry to be such a pest!