[permaculture] "warning that the , global availability of phosphorus fertilizer will begin to decline"
Lawrence F. London, Jr.
lflj at bellsouth.net
Thu Mar 31 14:18:42 EDT 2011
"Five major scientific societies united to issue a warning that the
global availability of phosphorus fertilizer will begin to decline
sharply just as the human population reaches 9 billion."
More information about the permaculture