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Leaderboard FD July August September 2023

A CT scan of a coral core shows that corals build their skeletons in annual bands, similar to annual growth rings in trees. Lighter regions are denser; darker regions are less dense. Using annual bands, scientists can reconstruct when changes in ocean conditions took place.

© Courtesy of Alice Alpert, WHOI
A CT scan of a coral core shows that corals build their skeletons in annual bands, similar to annual growth rings in trees. Lighter regions are denser; darker regions are less dense. Using annual bands, scientists can reconstruct when changes in ocean conditions took place. photo copyright Courtesy of Alice Alpert, WHOI taken at  and featuring the  class
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