Skyscrapers are synonymous with concrete and steel, but that’s quickly changing. Thanks to its aesthetic, structural and sustainability benefits, towers constructed of mass timber are popping up in cities around the globe. The 25-story Ascent in Milwaukee, Wisconsin, for which Thornton Tomasetti was the structural engineer, holds the record as the world’s tallest timber building. The 493,000-square-foot, mixed-use project developed by New Land Enterprises and Korb and Associates Architects was completed earlier this year. Vox Media looks at how this innovative building came together and talks to Associate Principal Jordan Komp and others on the project team about the challenges timber construction.