Hank offers a brief history of histology by explaining the technological progress required to make histology a discipline in science today. He mentions key people and events in the discipline's development.
The brain is not yet understood by scientists completely. In 2013, the Brain Initiative was put forth and allocated $1 billion in research towards neuroscience to understand the brain more.
Researchers are trying to understand how the brain functions during sleep. All animals sleep and have a circadian clock. This clock tells the body when to sleep and when to wake.
This clip explains how the body stores and removes fat. It dispels the notion that we gain weight because we eat more; rather, we eat more before we're gaining weight. It also explains how carbohydrates can contribute to weight gain.