A tiny, golden way to curb carbon emissions

Once — or if — we decide to seriously fight climate change, there will be riches to be found in technologies that turn the greenhouse gas carbon dioxide into something useful, such as fuel. One such method may truly be golden, according to new research.

The story starts with another metal — copper, the stuff of pennies. It is well known as one of the few metals that can turn carbon dioxide into fuels such as methane and methanol.