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This animation explains the Doppler shift and shows how the movement of a sound source relative to a listener raises or lowers the pitch.

Chemists have found potential drugs and other useful compounds in some truly bizarre places in nature. Who would have thought that blood from the Komodo dragon could have a secret inside of it that could possibly save your life? This video…

This animation explains echoes and shows how echoes occur when soundwaves bounce off objects.

Centuries after the discovery of the simple microscope, biomedical engineer Elizabeth Hillman has developed a cutting-edge microscope that can “see” inside the brains of living organisms and create 3D movies that answer fundamental questions…

This video explores what ringworm is, how to avoid contracting the infection, and—if you do—how to get rid of it. Credit: Reactions/American Chemical Society

From the dinner table to the human body, crystals are everywhere. This video highlights five scientific facts about this ubiquitous solid. [Credit: Reactions/American Chemical Society (www.youtube.com/acsreactions)]

A bar of chocolate contains hundreds of compounds, many with beneficial properties. This video explores a list of five chemical facts about why chocolate, in moderation, may be good for you. [Credit: Reactions/American Chemical Society…

We all want to be healthy, but some food myths can actually get in the way of good nutritional decisions. This video shatters one food myth that you may have heard: microwaving your food zaps its nutritional value. Watch to find out why that…

We all want to be healthy, but some food myths can actually get in the way of good nutritional decisions. Some people say that eating frozen vegetables means losing some nutritional value. But are those people right? [Credit:…

With all the hard hits and tough tackles in the sport of football come concerns about safety. In the U.S., every professional player is required to wear a helmet, but the helmets of today are a far cry from the leather creations from decades…