Sometimes in science mysteries remain mysteries for a long time! The discovery of diffuse interstellar bands happened nearly 100 years ago, yet it took until 2015 for scientists to understand a single band. Pupils learn about the...

You may have heard that, if you've had chicken pox, the shingles virus is already inside you. The bad news? It may not be alone! Introduce your microbiology class to some of the trickiest pathogens we know of in the 151st video in an...

What causes bug bites and other irritants to itch? Science scholars discover the body chemistry responsible for itching in the 130th video in a 143-part series. Topics include conditions that cause itching, the neurotransmitter...

Humans ingest approximately 1-5 mg of strontium everyday! An interesting video describes how scientists use the element strontium to learn about people. The narrator explains  where strontium is found and how it gets into and builds...

Hot water freezing faster than cold water is called the Mpemba effect. The interesting video analyzes the concept of water temperature and its effect on freezing rates. The narrator explores past experiments showing this effect and...

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...

The ability of litmus paper to change color in the presence of an acid or base is due to lichens in the paper. The narrator explains a litmus test and what pH measures, and then goes on to show how to make litmus paper at home using...

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...

Scientists are working on creating and verifying element 120 which would change the appearance of the periodic table. A short video, one in a series of 48, which explores Mendeleev's Periodic Table. The narrator shows how Mendeleev...

The helium in a balloon comes from the radioactive decay of the elements thorium and uranium. Video two in this series of 48 explores the element helium. The narrator discusses how humans use it, where it is found, how the United States...

"If you think you understand quantum mechanics, you don't understand quantum mechanics." - Richard Feynman. The video describes how our current model of physics predicts glueballs, groups of gluons attached to each other. Gluons have no...

Is the future of transportation taken from an idea in the past? Explore the invention and development of pneumatic tubes with a video that details why pneumatic tubes were popular and why they fell out of mainstream use. The video also...

In January 2017, the first quantum computer was offered to the public and came with 2000 qubits. The breakthrough that makes quantum computing possible is detailed in a video that also discusses how quantum computing will change...

Many consider nuclear reactors to be big and scary, yet the  first human-made nuclear reactor as described by this video was neither of these things. Built on a squash court in Chicago, the reactor was powerful enough to turn on a...

Scientists can't just change a neutron to a proton, can they? Although they don't have control of this process yet, they have identified the weak force that does exactly that. The simple graphics in an interesting video explain the...

Cloaking devices aren't just for Star Trek and Harry Potter any more! Here's a video that explains how cloaking devices work, or don't work. It details the technology needed to perfect cloaking and offers ideas for where researchers...

Heart of gold, gold mine, good as gold, gold digger. Why is gold so fascinating and such a focus of popular expression? Is it due to rarity, its shine, or some other factor? Here's a video that focuses on how gold is made and...

While a cosmic distance ladder sounds like fun, it is actually the name given to the variety of methods astronomers use to determine the distance to objects in space. This video examines the method of determining the distance of a star...

Can you predict what will happen more than 850 years in the future, down to the exact date? Scientists and mathematicians know exactly when specific asteroids will pass near us or possibly hit us. The video explains how they track the...

The largest series of nuclear fusion reactions in our solar system has been happening for millions of years. The sun works in much the same way that atomic bombs work. Here is a video that describes how each work and the safety checks...

Did you know our sun has the power to make telegraphs work and cell phones cease to work? Show a video that explains solar storms and their impact on us. It describes what solar storms are, when and why they happen, and the good and...

Are there more stars in the universe than grains of sand in the sea? This video looks at the way scientists attempt to answer this question by using data from NASA and focusing on observable space.

Warp drive is promising in science fiction but seemingly impossible in reality. This video explains what a warp drive is, its limitations, and examines new advances and discoveries that mean the development of warp drive is becoming...

What might happen if a body encounters the vacuum of space? Through multiple experiments and a couple of real-life accidents, we know more about how a person would die — and it doesn't look nearly as dramatic as science fiction...