Sources

4 Total Sources

Scientists Find 2nd Twist in 9-Foot Narwhal Tusks, Explaining Straight Growth

The New York Times1d ago

Scientists Discover Second Internal Twist in Narwhal Tusks Explaining Straight Growth

news.lee.net11h ago

X-ray imaging unlocks mysteries behind narwhal's spiral tusk

Billings Gazette12h ago

Narwhal the 'unicorn' puppy melts hearts across social media with his extra tail

Popular Science1d ago

Narwhal tusks are twisty, magical mathematical marvels | Popular Science