The problems of mold range from nuisance to nightmare, and seemingly harmless fuzz can ripen to full-blown infestation in the wrong conditions. Husband and wife Jeffrey and Connie May know mold intimately. They run a mold investigating business in Cambridge, Massachusetts. The Mays tell Living on Earth host Steve Curwood about some of the challenging and, sometimes, heartbreaking cases they’ve been called in to clean up, and how the average homeowner can guard against even the most persistent spores.