Researchers have developed a new, low-cost material for capturing carbon dioxide (CO2) from the smokestacks of coal-fired power plants and other generators of the greenhouse gas. Produced with a simple one-step chemical process, the new material has a high capacity for absorbing carbon dioxide — and can be reused many times. Combined with improved heat management techniques, the new material could provide a cost-effective way to capture large quantities of carbon dioxide from coal-burning facilities. Existing CO2 capture techniques involve the use of solid materials that lack sufficient stability for repeated use — or liquid adsorbents that are expensive and require significant amounts of energy.