8th

This video will show your students how pearls are formed in Bivalve animals.

Find out how glacier melt can actually raise the sea levels of the ocean.  Thermal expansion is also explained in this science video.

For most of history, scientists weren't quite sure why our hearts were beating or even what purpose they served. Eventually, we realized that these thumping organs serve the vital task of pumping clean blood throughout the body. This video investigates how it all works by taking a closer look at the heart's highly efficient ventricle system.
 

Check out some anatomy of whales.  This video demonstrates how whales communicate under water.  The video is of a real scientists who delves into the actual field of comparative anatomy.

Alzheimer's disease is the most common cause of dementia, affecting over 40 million people worldwide. And though it was discovered over a century ago, scientists are still grappling for a cure. This video describes how Alzheimer's affects the brain, shedding light on the different stages of this complicated, destructive disease.

A hearty bowl of cereal gives you the energy to start your day, but how exactly did that energy make its way into your bowl? It all begins with photosynthesis, the process that converts the air we breathe into energizing glucose. This video details the highly efficient second phase of photosynthesis -- called the Calvin cycle -- which converts carbon dioxide into sugar with some clever mix-and-match math.

While sugar is easy to spot in candy, soft drinks, and ice cream, it also hides out in foods you might not expect.  This video decodes confusing labels and sugar's many aliases to help determine just how much of that sweet carbohydrate makes its way into our diets.

This video details the "brown food chain," explaining how rotting detritus such as pond scum and animal poop contribute enormous amounts of energy to our ecosystems.

Everyone has an Adam's Apple.  This video discusses why a man's Adam's Apple is so prominent.

What is light pollution?  Most of the world can no longer even see the Milky Way Galaxy.  This video discusses why.