Khan Academy: Neuron Action Potentials: The Creation of a Brain Signal

How can you calculate the height of a tree without having to climb it all the way to the top? The sixth installment of an 11-part Math in Science video series demonstrates how to use trigonometry to determine the height of a tree. 

What is a black hole? Individuals hear a detailed explanation about what a black hole is, how it forms, and how it effects light and matter. The characteristics of a black hole determine the image it produces in telescopes, and...

How can you find how much wood one log can produce? Learners first learn how a log can be modeled as a cylinder. They then find out how to calculate the volume of a cylinder.

We know about many different life cycles of animals and plants, but did you know stars also have a life cycle? The video illustrates the life of a star in under one minute from the formation of helium to the collapse of the star. 

A video introducing the intermolecular forces in water by exploring capillary action and the formation of a meniscus. Video will discuss the forces of adhesion and cohesion. [8:25]

The heartbreaking story of Alfred Wallace's loss of collected evidence opens this documentary about the development of the theory of evolution. You will find supportive resources to use with the movie in your biology class.

What does it really mean to know a language? Did you know that knowing two or more languages means that your brain might actually look and work differently than those of your monolingual friends? Discover the three different types of...

See how capillary action and the meniscus are related to intermolecular forces in water. [8:26]

It's well known that people should get eight hours of sleep each night, but exactly why is that? Follow along with this short video as it investigates the crucial role sleep plays not only in peoples' physical health, but...

Dicover the science of taxonomy and where humans fit into the tree of life. [12:41]