A team of engineers from MIT have found a new way to capture carbon dioxide from the atmosphere, put it to good use and keep the air clean. They've created a simple device with a stack of electrochemical plates. When charged up, the electrodes absorb CO2 and release a pure form. This pure CO2 stream can be compressed and injected underground for long-term disposal or it could be used to replace fossil fuels and natural gas in industrial processes and agriculture. At present, the system can withstand at least 7,000 charging-discharging cycles with a 30% loss in efficiency and researchers hope to improve this to reduce even more CO2 from the environment.