NASA scientists map global salt marsh losses and their carbon impact

[PhysOrg]

According to a new NASA-led study, the world has lost 561 square miles (1,453 square kilometers) of salt marshes over the past 20 years. In a recent research paper published in the journal Nature, scientists described the first consistent global accounting of salt marsh locations and changes. The work also allowed them to start estimating the amount of carbon dioxide—a greenhouse gas—emitted into the atmosphere as marshland is degraded or lost.

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