The amount of carbon dioxide (CO2) emitted into the atmosphere by industry, automobiles and other technologies and human activities is a major culprit in climate change that is warming the planet, acidifying the oceans and intensifying dangerous weather events. Fulton Schools Professor Klaus Lackner has been involved over the past 25 years in seeking ways to remove much of that threatening buildup of CO2. In an interview, he talks about the synthetic mechanical “trees” that have been developed in his lab — and are being moved toward commercialization — and what they could do to help clear the air of CO2 and impede the acceleration of climate change.