Architect Maria Paz Gutierrez is a woman on a mission. In addition to mentoring student building designers at the University of California (UC), Berkeley, Paz Gutierrez is putting her own design skills to work to address a key environmental and socioeconomic issue around the world--water scarcity. Together with environmental engineer Slav Hermanowicz and bioengineer Luke Lee, Paz Gutierrez is hoping to take the recycling of wastewater from sinks, baths and laundry, known as greywater, to a whole new level.