Most of us are hoping that any nuclear threats are just empty threats, and getting at the facts about ICBMs can be difficult. But what would actually happen if someone launched a nuclear weapon?

From Angola to the former Yugoslavia, land mines are a lethal legacy of wars over long ago. Cambodia is among the most affected countries, with millions of buried explosives that kill and maim people each year. Now, an organization is...

Most of us are hoping that any nuclear threats are just empty threats, and getting at the facts about ICBMs can be difficult. But what would actually happen if someone launched a nuclear weapon?

So, how do we go about being engineers? In this episode of Crash Course Kids, Sabrina talks to us about the Engineering Process and why we should do things in order, as well as many of the questions we should ask along the way. This...

Hank introduces us to the brilliant and heartless Fritz Haber, a great mind who is considered "the father chemical warfare," but who also made discoveries and innovations that helped lead to the Green Revolution which is credited with...

Chinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.

Imagine a substance so powerful that it could blow you to bits or save your life depending on how you used it. Well imagine no more: such a substance exists and you've probably heard of it.

In February of 1942, Mexican farmer Dionisio Pulido thought he heard thunder coming from his cornfield. However, the sound wasn't coming from the sky. The source was a large, smoking crack emitting gas and ejecting rocks, and would come...

Howcast - Learn about UFC fighter Lyoto Machida from kickboxing champion Phil Nurse in this Howcast video.

Howcast - Learn how to do lying toe taps from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Check out part 2 of this Captain America: Super Soldier walkthrough and beat chapter five with this online demo.

Howcast - Learn what football scouts look for in a player in this college football recruiting video from Howcast with coach Randy Taylor.

Howcast - Learn what causes explosive diarrhea from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.

Howcast - Check out this Captain America: Super Soldier walkthrough and beat chapter five with this online demo.

This Video Explains Examples of Strict Liability Actions in Tort

Do explosions actually throw people into the air? If so, how powerful would it have to be and could our hero survive such a fiery boom?

A large cauldron-like volcanic feature, formed when a chamber full of magma empties and the ground above it collapses.
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A bowl-shaped depression, usually circular, in the surface of a planet or moon.
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Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Potassium nitrate is a natural substance found in your food, or in an exploding firework. What makes it so versatile? Chemistry - Chemical Industries - Learning Points. Potassium nitrate preserves our food and is a component of...

Learn why electron shells are responsible for the properties of elements, and whether they are stable or have violent reactions. Chemistry - Atoms And Bonding - Learning Points. An element's reactivity is determined by the number of...

The story of Alfred Nobel's life work and legacy, and his little known role in the discovery of dynamite. Chemistry - Reactions - Learning Points. Alfred Nobel invented dynamite in 1867. Alfred Nobel also founded the Nobel Peace Prize,...

Exploring the science behind fireworks, discover how different elements are used to produce different colours of fireworks. Chemistry - Atoms And Bonding - Learning Points. In the mid-19th century the inventor if the Bunsen burner,...

Fireworks combine chemical processes, from combustion to spectroscopy, to create spectacular displays. Discover what happens when the fuse is lit. Chemistry - Reactions - Learning Points. Fireworks involve combustion and exothermic...

The basic ways elements combine to create compounds, fundamental to life as we know it. Chemistry - Atoms And Bonding - Learning Points. There are 92 naturally occurring elements. They fall into two categories: metals and non-metals....