Science3D X-ray imaging unlocks the secrets of the narwhal's spiral tusk

In the Middle Ages, narwhal tusks were sold as unicorn horns believed to neutralize poisons and cure disease. Monarchs and nobles prized them at values exceeding their weight in gold. They had no such powers, but remain mysterious objects today.

narwhal3D imagingX-rayanimal science

RReuters★★☆☆☆2026-08-20 15:25Original