Louisiana marshes bury carbon in the muck. Could they help fight climate change?

Jan 10, 2024

Gathered on a strip of salt marsh bordering the Gulf of Mexico, Tim Carruthers and his team of scientists huddle around a patch of soil marked by protruding PVC pipes.

Pelicans soar overhead and massive ocean-going ships cruise by, heading toward the neighboring oil and gas seaport of Port Fourchon. But Carruthers’ team has their eyes fixed on the ground.

The group works a thick pipe into the soft dirt and releases liquid nitrogen, letting it flow into the ground with a loud hiss. The process results in a long tube of frozen mud — a sample they can take back to the lab.

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