Energy from carbon dioxide

The greenhouse gas carbon dioxide generated by burning fossil fuels gets a bad rap because of its growing impact on our changing climate. However, it might be redeemed if there were an energy- and resource-efficient way to convert it back into something useful or use it to generate new energy. Now, researchers at Cornell University, New York, USA, have developed an electrochemical cell, which they say traps carbon dioxide from the air to generate electricity. At the same time, the cell produces a high-value C2 compound as a byproduct of the process. An aluminum anode and a mixed stream of oxygen and carbon dioxide are the essential features of the system.