Mary Caswell Stoddard, an assistant professor in Princeton’s Department of Ecology and Evolutionary Biology, proposes a far-ranging hypothesis regarding how and why bird eggs acquire their shapes. Her ...

The curved geometry of a fertilized zebrafish egg sets the conditions for a cascade of cellular events that shape the embryo’s earliest developmental stages, according to research from the Institute ...

Q. I saw a photo of different kinds of bird eggs and noted not only the obvious, that smaller birds lay smaller eggs, but also that some bird eggs are elongate whereas others are more rounded. What is ...

Why do sea turtles, softshell turtles and snappers lay round eggs whereas pond sliders and many other turtles have elliptical eggs shaped more like those of a chicken? This question came up recently ...

For years, scientists have tried to crack a mathematical mystery: Is there an equation that can perfectly describe each and every bird egg? Variable shell shapes complicated things. But it turns out ...