In an episode of a new podcast series that focuses on news and views of direct air capture technology, or DAC, which extracts troublesome carbon dioxide from the atmosphere,  Klaus Lackner, a professor in the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools, and founding director of ASU’s Center for Negative Carbon Emissions, is interviewed about the work that has earned him the unofficial title of the Grandfather of DAC. This look at his contributions to the field provides an informative overview of the challenges to ensuring a safe and healthy atmospheric environment.