I can still see it in my mind. It almost looked like it was boiling and kind of sounded like it because of the water falling down the sides of the trunk. I don't remember the time of year, but there was no snow and there were leaves on the tree. I have been told that large cottonwood trees...
I was researching capillary action to design an efficient evaporative cooler, when I found this thread... https://www.physicsforums.com/threads/using-capillary-action-to-raise-water-is-perpetual-flow-possible.551285/
Upon reading this thread, the statement, "Trees are solar driven evaporative...