Swirl by Swirl: Spirals in Nature
Autor
Beth Krommes
, Joyce Sidman
What makes the tiny snail shell so beautiful? Why does that shape occur in nature over and over again - in rushing rivers, in a flower bud, even inside your ear? The authors not only reveal the many spirals in nature - from fiddleheads to elephant tusks - but also celebrate the beauty and usefulness of this fascinating shape.