Ted: Ted Ed: How Does Caffeine Keep Us Awake?

Caffeine is a mild stimulant for the nervous system and in moderation, is not harmful to the body. The narrator discusses sources of caffeine, its chemical make-up, and what it does inside the human body. He also shares the recommended...

Discover the science behind the world's most popular drug. Scholars explore the neural effects of caffeine in an episode of the larger ACS Reactions playlist. The presenter explains how caffeine impacts different neurotransmitters in the...

How does taking a drug designed to speed the body up calm a brain that's working too fast already? Health scholars examine the effects of Adderall and other amphetamine compounds using a video from the American Chemical Society's...

Surprise—even pharmacists don't know how Tylenol works! An installment of the ACS Reaction series considers three theories that explain the function of acetaminophen, the ingredient in the popular pain reliever Tylenol....

Wash away any reservations about using the resource. Scholars watch a video in the ACS Reactions series to learn about shampoo and how it works. It explains that there isn't really much difference in commercial shampoos—despite what...

Beef up your knowledge of muscles. Individuals learn how protein builds muscle in a video from the ACS Reactions series. The video explains the amounts of protein necessary to build muscle.

You might want to put down your coffee for this one. Discover the science behind this stimulant, its origins, side-effects, and benefits of the most widely used drug: caffeine.

Caffeine is a legal stimulant that many people use every day, and some people are even addicted to it...but why? Discover the science behind this everyday drug, including how caffeine acts on the central nervous system, stimulates...

What triggers asthma? What are the symptoms of an asthma attack? Watch a video that explains how asthma affects the respiratory system and the extra work the lungs have to do when a person is undergoing an asthma attack.

Who would imagine that the use of mustard gas during World War I would lead to the discovery of chemotherapy? Learn more about how an investigation into this terrible weapon of war leads to the development of this modern cancer treatment.