Placemark.
THank you for your interest in this topic!
FYI, we are gathering together on this thread any articles or videos, etc. having to do with this topic as we find them. Participants who find such articles have been posting them to the thread to me, and then I will send out a ping to those who have chosen to be on the list. (It is a fairly low volume ping list.) Others have just been simply checking the thread from time to time.