Techniques developed to study the distant past—from dating ancient artifacts to reconstructing climate records in ice ...

Learn how researchers use archaeological techniques to show how sea turtle shells grow in layers that capture chemical clues ...

Sea turtle shells record life history layer by layer over many years, clearly revealing diet, stress, movement, and ocean ...

Cartoons often suggest turtles wear shells like removable armor. Those stories show turtles stepping out, swapping shells, or treating them like clothing. Biology disagrees. A turtle shell is not an ...

TOKYO -- Among material of great value used to create accessories and handicrafts during Japan's Edo period (1603-1867) were "bekko," or processed turtle shells with an exquisite blend of hues of ...