TORONTO, Ontario Originally published January 6, 2012, for the University of Guelph-humber’s paper, ‘Radix’ http://www.radixonline.ca/?p=6398 Guelph-Humber’s trademark plant wall or, more notably, “The Wall of Life,” is undergoing some major construction that will ultimately affect the way we breathe. After being put up 10 years ago, the wall is having its first major overhaul. Alan Darington,…