Look at the nail of your pinky finger. That’s about the width of the biggest known insect egg, which belongs to the earth-borer beetle Bolboleaus hiaticollis. The smallest egg, from the wasp ...

What’s in an egg? Your breakfast omelet aside, the answer is simple: birds. But not every bird is alike—and neither are their eggs. Look closely, and you’ll see a wide variety of egg shapes and sizes, ...