Over the last two decades, annual carbon dioxide emissions in the U.S. have declined significantly. In recent years, however, this trend has slightly reversed, likely due to the explosive growth of data centers. As energy-intensive data centers proliferate, their emissions could undo years of decarbonization efforts. According to an analysis of data in the public domain, capturing and storing emissions in underground reservoirs could halt this reversal, researchers report in ACS' Energy & Fuels.