I would imagine that Stahl was informed of this field test by Schweitzer.
G3, although we completely disagree on the age of the Earth, I saw this show when it aired, and knew you’d be interested. Meant to ping you the next morning, but got involved at work, and forgot. Sorry!
I would be surprised to find that Schweitzer wouldn't know that some rocks will stick to your tongue or wet lips. On the farm in Iowa, where there used to be an ocean....evidenced by oceanic fossils in the soil....they called 'em "lip rocks" 'cause they'd stick to your wet lip.