This story is part of a series exploring human anatomy and physiology complexities. Each story in this collection showcases discoveries reshaping our understanding of the body's inner workings, ...

As an extension of the central nervous system, the eyes share an anatomical connection with the brain that is key to an animal’s ability to see. Besides the visual connection, both the brain and the ...

Your eyes might be the window to your future brain health, and what researchers are discovering could change how we detect Alzheimer’s disease forever. Long before memory problems become noticeable, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Using a speck of ...