Howstuffworks Videos

Tools that say "drop forged" have been created using a technique called drop forging. Find out how drop forging and several other kinds of forging work, and why drop forging is a sign of a sturdy tool, in this episode of BrainStuff.

Population may not seem like the most scintillating topic in the world, but Josh and Chuck beg to differ. Join them as they explore how population works, from demographics to population control, in this episode.

A T1 line is a dedicated fiber optic or copper cable that provides businesses with far more digital data than a residential line. Discover how T1 and other kinds of fiber optic lines work in this episode of BrainStuff.

The US and England have databases containing DNA from millions of citizens. Originally only criminals were included, but as the programs expanded many more people were added. Learn how these databases work -- and why they were built -- in this episode.

The afterburner on a jet engine adds thrust to the engine. Tune in as Marshall Brain explains how an afterburner works -- and the pros and cons of using one -- in this episode of BrainStuff.

In the current U.S. debate over health care reform, a government-sponsored public option has been a controversial topic. Tune in to this episode of BrainStuff to hear Marshall Brain explain the nuances and implications of the public option.

In this episode of Stuff You Should Know, Josh and Chuck take a look at the advertising practice of product placement, from its origins to different types to classic examples in film and television.

Table salt contains iodine to help prevent thyroid problems and iodine deficiencies. Find out how table salt keeps your thyroid happy -- and what iodine has to do with a nuclear attack -- in this episode of BrainStuff.

Some people have memories of very early childhood, but how far back can you go? Is it possible to remember your own birth? Josh and Chuck are on the case in this episode of Stuff You Should Know.

Sodas and soft drinks contain a surprising amount of sugar -- more than you might expect. Tune in as Marshall Brain reveals how much sugar is in soda in this episode of BrainStuff.

Desktop computers and laptops only have so many USB ports, so what do you do when you want to plug in more USB devices and they're all full? You buy a USB hub. Find out how these hubs work, and which kind you should get, in this episode of BrainStuff.

In this Halloween episode, Josh and Chuck go way back to late 19th century London to examine the grisly details of the Jack the Ripper murders. They also discuss Ripperology, Jack the Ripper suspects and theories, and the legacy of the murders.

You've probably had countless fortune cookies after Chinese meals, but have you ever wondered how they're made? Discover the "food technology" behind those prescient little cookies in this episode of BrainStuff.

The Witness Protection Program, or the Witness Security Program, was established in 1970 to protect government witnesses before, during and after a trial. Learn more about witness protection in this episode of Stuff You Should Know.

Sea level is an important measurement, but it's also a complicated one. Find out why in this episode of BrainStuff.

Many foods you'll find at the grocery store, like lettuce, for example, are stored in special plastic packaging called MAP that helps them stay fresh longer. Find out what MAP is -- and how it keeps food fresh longer -- in this episode of BrainStuff.

The Cannon Ball Run is a cross-country car race famously portrayed in the campy 1981 movie "Cannon Ball Run." But it isn't fictional. Tune in as Josh and Chuck take you on a wild ride through the real (and colorful) history of this infamous race.

Herbicides like Roundup are products that inhibit plant and weed growth in a very specific way. Explore the biochemistry behind glyphosphate-based herbicides in this episode of HowStuffWorks.com.

China's one-child policy, implemented in 1979, was designed to limit population growth. In this episode of Stuff You Should Know, Josh and Chuck examine the policy's surprising origins, impact on Chinese culture, and pros and cons.