Microscopic images reveal how herbs get their flavor. See the otherworldly landscapes of common herbs—rosemary, lavender, basil—that give plants self-protection and our foods appealing flavors.

"I cure the 'evil eye,' the evil of the nation," says Margarita Rojas Mena, a healer and herbalist. "When there are wounds, I use my herbs, and sometimes I've had to do sutures." Here she is wearing a ...