X-rays Reveal Double-Helix Structure in Narwhal Tusks
An international research team has uncovered the internal architecture of the narwhal’s iconic tusk, revealing that the tooth is built from a double-helix structure. X-rays Reveal Double-Helix Structure in Narwhal Tusks Male narwhals possess what are considered some of the strangest canines in the animal kingdom. Their left upper canine grows during youth to become … Read more