Vanderbilt University engineers have discovered how to break carbon dioxide in air into carbon and oxygen, and then stitch the carbon together to make carbon nanotubes -- a valuable engineering material. What one researcher called "black gold," the tiniest carbon nanotubes are stronger than steel and more conductive than copper, and reducing their cost of production would be a boon for the manufacturing of tires and batteries.
Credit: National Science Foundation/Karson Productions
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