Original sentence: While Gernot Minke, the German professor of earthen architecture, first developed a technique of using bags filled with pumice to build walls, architect and builder Nader Khalili helped reintroduce earthbag construction as a modern technique called superadobe for humanitarian efforts (particularly for residential buildings) as well as natural flood control
Edited sentence: Buildings at the Cal Earth Institute in Hesperia, CA, which he established in 1991, include domes and vaulted roofs.Khalili called his technique superadobe, because he filled the bags with moistened adobe soil.Khalili pioneered code approval of earthbag domes for seismic risk regions.Several books and videos have been produced by the institute to demonstrate his methods, however a number of other individuals and groups now offer training workshops.While Gernot Minke, the German professor of earthen architecture, first developed a technique of using bags filled with pumice to build walls, it was architect and builder Nader Khalili who first popularized earthbag construction (particularly for residential buildings)