Karate is not only about strength and speed; the technique involves as much thought and focus as physical power. This incredible art form is built on the concept of merging body and mind into a defensive weapon. See how karatekas use this merger to break cinder blocks with their feet. Credits: , HowStuffWorks
A car engine uses a four-stroke cycle -- how can two strokes accomplish the same tasks? Learn all about the two-stroke engine, where it's used and how it compares to a four-stroke.
You probably know that any car with a manual transmission has a clutch. Learn how the clutch in your car works, and find out about some surprising places where clutches can also be found.
Have you always wondered what is on the inside of your computer? This video takes a look at the inside of a computer and examines the seven major parts. Credits: , HowStuffWorks
HowStuffWorks recently visited the Suzuki ATV plant in Rome, GA to see how they build their ATVs. Check it out in this HowStuffWorks factory tour video. Credits: , HowStuffWorks
Grenades are a devastatingly effective weapon on the battlefield. In the trench warfare of World War I, soldiers could use grenades to take out machine gunners without ever revealing themselves to the enemy. Find out what happens when a soldier pulls the pin and tosses one of these bombs at the enemy. Credits: , HowStuffWorks
The Georgia Aquarium is the largest aquarium in the world, and officials estimate that 2.4 million people will visit in its first year of operation. So how did they do it? How did they build habitats for all those animals, and what does it take to keep them fed and healthy? Find out how the aquarium came to be and learn about the animals that call it home.
