Brenna Davis is director of sustainability at Virginia Mason in Seattle, named one of the 50 greenest health systems in the U.S. in 2013. She began her sustainability career in a Northwest oil refinery in 1995. Her education in environmental science, business, and systems thinking gives her a passion for data, a focus on results, and an obsession with continuous improvement. Her work helps others connect with their innate leadership abilities so that the earth can be renewed for future generations. Follow Virginia Mason on Twitter (@VirginiaMason) and Facebook (Facebook.com/vmcares).