Fun physics? No. Fun life? No, although humans have and have had a great interest in the AOTC. It's not an occupation, either. Earthbound? So far as anyone knows, only on Earth.
Observable? There are observations of this occurring. Economic? No. Aristotelian? Didn't know him personally, but the concept was almost certainly around then.
Biology? Arguments start among the audience. Life and death and so forth are all biological, but this is not usually considered to be a biological process. Rebirth? No, but the audience really like it. Appreciation is shown.