Nathaniel Kirby: I’m a landscape architect at Colwell Shelor, a landscape architecture and urban design firm in Phoenix, Arizona. I design, collaborate on, and manage a wide variety of projects, including streetscapes, city plazas, resorts, and multifamily highrises. My work involves everything from native landscape design and stormwater management to creating sidewalk paving designs and decorative shade structures. Sustainability is important to our firm, so we try to incorporate it into every project.