Roughly 20 million years ago, monitor lizards, also known as goannas, appeared in Australia. These reptiles not only adapted to the region’s harsh environment—they thrived in it. And that success ...

A, C, E (top) are the external views of an adult human, cat, and a juvenile horse, respectively. The bony cap is depicted in yellow, the distal phalanx is blue, and the middle phalanx is red. B, D, F, ...

Lizard bone armor evolved at least 13 separate times over 320 million years, and monitor lizards even re-grew it after losing ...

Everyone knows that we can view the broad structures of our bones in the body by taking X-rays. Yet that's just scratching the surface. Science now has a host of new imaging and characterization ...

The shoulder, or pectoral girdle, is a structure that plays an essential role in many functions and movements. The three shoulder bones include the scapula, the clavicle, and the humerus. A shoulder ...