The Shape of Things

By the Author of the Martian Chronicles and Fahrenheit 451.
He did not want to be the father of a small blue pyramid. Peter Horn hadn't planned it that way at all. Neither he nor his wife imagined that such a thing could happen to them. They had talked quietly for days about the birth of their coming child, they had eaten normal foods, slept a great deal, taken in a few shows, and, when it was time for her to fly in the helicopter to the hospital, her husband, Peter Horn, laughed and kissed her.