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Images: New Zealand Dust Possible Source of Ice Age Cold

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Iron-rich dust cools the climate

Credit: NASA SeaWiFS
Iron-rich dust, the eroded remnants of iron-rich rocks, can travel through the atmosphere for hundreds of miles before depositing on land or the open ocean.…Read More »





In the ocean, the dust fertilizes phytoplankton. Phytoplankton suck carbon dioxide out of the atmosphere when they photosynthesize and, when they die, they drag the potent greenhouse gas to the seafloor. As a result, so-called iron fertilization has been shown to help cool the climate.   Less «
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