The public relationship/communication skills of Daesh. For being so few, they are quite well-known. Literally: all publicity is good publicity for them, or sother they think.
The optimal vibrational tones combined with the tunes of an alarm clock for our bodies. It cannot be healthy to wake up to horrible sounds every morning, is my assumption, and I assume further there is a way to find out what kind of signals are best for each and one of us. We know from before that there are frequencies which can make the lungs collapse or disturb pacemakers, so what about "positive frequencies"?