Alex B. Lim specializes in the conservation of architecture and archaeological sites and is based in Arizona. Since 2012, he has worked on conserving earthen buildings and their remains in the border region of the U.S.-Mexico, focusing on Hispanic and Native American heritage on both sides of the border. He is particularly engaged with Tohono O'odhams, Pascua Yaquis and Seris, who also call the Sonoran Desert their home. Prior to Arizona, he has worked on archeological sites of the arid climate in the U.S. Southwest and in the Mediterranean/Middle East. They include Mesa Verde National Park, El Morro National Monument in the U.S. as well as sites in Gordion, Turkey; Oglanqala, Azerbaijan; and Megalopolis, Greece. As a conservator, he is educated and has experience in environmental monitoring, site recording, conditions assessment, and intervention. Through close working relationships with indigenous people at respective sites, he has insights into and appreciation for sustainable conservation practice that is particularly needed in times of Climate Change and in traditional societies experiencing societal and cultural pressure for adaptation. In 2009, he won Anthony Nichola Brady Garvan outstanding thesis award for his study on the use of soil and vegetation to protect the exposed masonry wall tops at archaeological sites. Called soft vegetative caps, his study highlighted a sustainable alternative to crack-prone cementitious hard caps. His method, developed during his time at the Center for Architectural Conservation at the University of Pennsylvania, was applied at the archaeological site of Gordion, Turkey with help from the community. He regularly initiates public outreach and student mentorship through hands-on workshops, tours, and internship programs to advocate for heritage stewardship. He speaks fluent Korean and conversational Turkish and Spanish. He holds MS in historic preservation from the University of Pennsylvania and BA in natural sciences from the Johns Hopkins University.