The Christian Science Monitor—How to stash carbon dioxide: Turn it into stone.

A long-known but little-tested means of permanently storing carbon dioxide (CO2) underground, mineral carbonation, is now the subject of study in Iceland and Oman.

The good news is that mineral carbonation promises to lock away CO2 – a powerful greenhouse gas – in a much more stable form than simply pumping it into an underground geologic formation. The bad news: Sequestering CO2 in this way is resource-intensive.

Scientists the world over are exploring ways to capture carbon dioxide and pump it deep underground as a compressed gas. But what’s to keep the buoyant gas from working its way up through fractured rock and reentering the atmosphere? Read more…

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