Human: The World Within

All sight is translated into electrical impulses via the retina to the brain. The eye picks up information in the form of light. This light is instantaneously transformed into electricity, which shoots up to the brain. Once there, the electricity is decoded and formed into a picture. The information is

Pain is a phenomenon that is deeply intertwined with the brain and nervous system. When something is wrong with the body, signals travel to our brain as neural impulses. These impulses are then interpreted by the brain as pain, which is basically the body's signal to us that

The brain is mission control of the human body and the nervous system. Its 100 billion cells are processing data an incredible speeds. The brain coordinates not only the major functions of the body, but it also is the hub where information is interpreted and stored, and then turned into

An introduction to the amazing functions of the human body's nervous system. This extremely advanced part of our biology is always at work interpreting the world we encounter and helping us decide what to do, and how to react. The secrets of our thoughts and decisions are locked

Jason Little lost his hand in a car accident, which he thought meant the end of being able to sense touch in that part of his body forever. Years later, he's now the first user of a new wireless interface that connects to his prosthetic arm and allows

It doesn't usually make the list of the five most important human senses, but proprioception is fundamental. It's our sense of where our bodies exist in space. We can feel where our hand is or where our feet are without looking at them. And we can

An introduction into the amazing functions of the human body's five senses. Our bodies are constantly absorbing different kinds of information from the outside world. Sights, sounds, smells, tastes, feelings. Inside the body all of these things are pieced together to create our individual reality.

The experience of smell starts when air molecules meet tiny little hairs in our nasal cavity. These hairs are called cilia, and they trap the incoming fumes so they can be processed.

When we lose one of our senses, the loss isn't something the body can't handle. It just means that the brain has to figure out a new way of filling the void left by the information that's no longer there. Our bodies are actually

An introduction into the amazing functions of the human body's immune system.

An introduction to the amazing functions of the human body's digestive system. Our continued survival as individuals and as a species requires energy. And we get that by extracting nutrients from the food we eat. Our digestive system has the job of refining everything we eat into raw

The microbiome is the cutting edge of gut science. It's an ecosystem that's made up of trillions of bacteria that instead of making us sick, actually have a big hand in keeping us healthy. When this population of microbes is thriving and in check, it does