If a hen inherits a blue gene and a brown gene, she lays green eggs. Perhaps Dr. Seuss was on to something with his green ...

While it’s a common misconception to believe that brown eggs are somehow more “natural” than white, eggshells are determined ...

This Easter ... Dinosaur eggs, like bird eggs today, get their colors and speckles from various combinations of those two molecules. Biliverdin is the source of blue/green and protoporphyrin ...