Once a hallmark of the boy and girl next door, blue eyes have become increasingly rare among American children. Immigration patterns, intermarriage, and genetics all play a part in their steady decline. While the drop-off has been a century in the making, the plunge in the past few decades has taken place at a remarkable rate.
The influx of nonwhites into the United States, especially from Latin America and Asia, hastened the disappearance. Between 1900 and 1950, only about 1 in 10 Americans was nonwhite. Today that ratio is 1 in 3.