A short video traces the practice of cannibalism through history and across cultures. Viewers may be shocked to learn the extend to which it is practiced today, even in the United States.

Did you know all the good chemistry jokes Argon? The narrator explores chemistry through the eyes of three experiments which, in his opinion, are the most important ones in chemistry. These would be the discovery of oxygen, the discovery...

Acyanotic heart disease is a group of heart conditions where blood with oxygen mixes with blood with little oxygen in the heart. This mixing is not enough to cause cyanosis, a symptom of not enough oxygen being delivered to tissues of...

Check out how the amount of Myosin that is tugging on your heart can change depending on your activity level! Rishi is a pediatric infectious disease physician and works at Khan Academy.

Understand the differences between TIV (dead virus) and LAIV (alive, but weakened virus) and who should get which one. Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical...

This lesson will define the role of medicine, health, and social epidemiology. It is 3 of 5 in the series titled "Health."