Researchers at Panasonic have developed a device called the Artificial Photosynthesis System that can reduce CO2 levels as efficiently as some plants. The system uses sunlight to produce oxygen and organic substances from water and carbon dioxide just like plants. Panasonic says an improved version of the device could absorb CO2 in factories and produce ethanol.
Nina Sen is a frequent contributor to Live Science’s Life’s Little Mysteries series: an exploration and explanation of our world’s phenomena, both natural and man-made. She also writes astronomy photo stories for Live Science's sister site Space.com.