Specifically, cuboid syndrome develops when the cuboid bone moves down and out of alignment with ... such as arthritis, a broken bone, circulatory or nerve problems, or bone disease.

A century after Down syndrome was first described, scientists discovered that the root cause of this disorder is a condition called trisomy 21. What strides in research have been made since then?

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A fossilized ear ...