On a funny note in relation to this thread, Nordberg is of the old school anti human urine crowd... He very much preaches to keep human urine sent contained.

No surprise to me considering that his studies were done mostly in the late 70's, threw the 80's.

Tho it may be a part of his rhetoric as well. Like I said, I've found his data to be very accurate... That said, he is also trying to sell his books. I've not fully subscribed to his methodology, tho have adapted some of it to suit my own situations.