CT scan view of the tip of bluntnose six-gill shark (or cow shark) tooth (blue) found embedded in the extinct right whale skull. Scale bar = 1 mm). Illustration by Olivier Lambert (RBINS).

In a drawer at Chicago’s Field Museum of Natural History, scientists found what amounts to a frozen moment of ancient violence. A neck vertebra from a long-necked marine reptile held a broken tooth ...

Rachel works as a CRNA where she provides anesthesia care across the lifespan, including pediatric anesthesia, with a primary focus on orthopedic anesthesia. She is also an Assistant Professor at the ...