Climate / Environment / Science Tech companies want to capture carbon at paper mills and sewage plants Tech companies want to capture carbon at paper mills and sewage plants / Google and other big names signed multimillion dollar deals to capture carbon dioxide from wastewater treatment plants and paper mills. By Justine Calma , a senior science reporter covering energy and the environment with more than a decade of experience. She is also the host of Hell or High Water: When Disaster Hits Home