Atom-by-Atom Growth Chart for Shells Helps Decode Past Climate

For the first time scientists can see how the shells of tiny marine organisms grow atom-by-atom, a new study reports. The advance provides new insights into the mechanisms of biomineralization and will improve our understanding of environmental change in Earth's past.

Led by researchers from the University of California, Davis and the University of Washington, with key support from the U.S. Department of Energy's Pacific Northwest National Laboratory, the team examined an organic-mineral interface where the first calcium carbonate crystals start to appear in the shells of foraminifera, a type of plankton.

"We've gotten the first glimpse of the biological event horizon," said Howard Spero, a study co-author and UC Davis geochemistry professor. The findings were published Monday, Oct. 24, in the Proceedings of the National Academy of Sciences.

Read the full article for details about how the shells of tiny marine organisms grow atom-by-atom.

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