Materials Science

Once upon a time, food was used for one thing: eating. Today, it has a much more complicated role. And one of those roles might be serving as an upstart in the world of plastics.

By Jonathan Atteberry

Turning saltwater into tasty, drinkable H20 at desalination plants is probably the biggest-selling point of reverse osmosis, but let's back up a minute. What's osmosis, and why — and how — is reversing it useful to us?

By Kate Kershner

For a process that simply bonds two pieces of metal, welding affects a lot of our world and some stuff that's out of this world, like the International Space Station. What's it like to man the torch?

By Jonathan Atteberry

This not-so-new material looks like a hologram and could play a valuable role in the future of insulation, electronics, oil spill cleanup and green energy. So why don't aerogels have the A-list name recognition they deserve?

By Heather Quinlan

Versatile and efficient, electroluminescent (EL) wire is widely used by artists to illuminate clothing, bicycle spokes, turntables and even cars. But how does this cool product work with so little power and without a visible energy source?

By Joanna Burgess

Charles Goodyear was obsessed with this stretchy material, and we are, too. It's weatherproof, shockproof and entertaining, and it's found in more products than you can shoot a rubber band at.

By Craig Freudenrich, Ph.D.

Nanotechnology is so new, no one is really sure what will come of it. Even so, predictions range from the ability to reproduce things like diamonds and food to the world being devoured by self-replicating nanorobots.

By Kevin Bonsor & Jonathan Strickland

The centuries-old art of sword making involves incredibly intricate metal work, and it's still being practiced today. Get a rare glimpse into the creation of this ancient weaponry.

By Jeff Tyson

The refining of iron ore is one of our most historically significant achievements. The element is so important that primitive societies are measured by the point at which they learn how to refine it.

By Marshall Brain & Robert Lamb

Welding isn't the only way to make metals, like the ones on your aviator shades, meet up. Brazing can do the trick, too, with a little heat, some filler and some capillary action.

By William Harris

As an invention, Cold Heat seems to have everything. But reviewers -- both professionals and average users -- either love the tool or hate it, and some people question whether it's really "new" at all.

By Tracy V. Wilson

Plastics can be shaped or molded into any form, and they're everywhere -- in your car, computer, toys and even bubble gum. But because they don't degrade, they cause big problems when it's time to throw them out.

By Craig Freudenrich, Ph.D.

Steam technology powered the Industrial Revolution, transformed the global shipping industry and revolutionized modern warfare. But how do steam engines actually harness the power of steam?

By Robert Lamb & Yara Simón

Welcome to the wonderful and weird world of nanowires. Scientists can adapt this incredibly thin material for a number of uses, whether as a fiber-optic nanowire or to build increasingly smaller microprocessors. They're even used in medical implants.

By Jonathan Strickland

All steel is not the same, and Damascus steel has a reputation for being the best. But is today's Damascus steel the same as that forged centuries ago?

By Carrie Whitney, Ph.D.

Crumpling is a physical process that occurs when a thin sheet is forced to adapt to a smaller space and is seen in everything from DNA packing in a cell nucleus to the formation of mountains.

By Patrick J. Kiger

Dyneema is trademarked as the world's strongest fiber. Find out how this high-strength synthetic is capable of protecting an individual (or an entire vehicle) from IEDs or even shots fired from an AK47.

By Christopher Neiger

Nanotechnology is one of the hot buzzwords of the 21st century. You know that it has to do with things that are very small, but just what are the implications of technology on the molecular scale, anyway?

By Jonathan Strickland

If people could create nanomachines, they might be able to help fight diseases on the molecular level. They might even be able to replicate themselves. But what happens if that process gets out of hand?

By Jonathan Strickland

If you think asphalt is what hot tar roads are made of, you'd be wrong. Asphalt is only one ingredient in the recipe that makes up our roads. And it has a very long, very interesting history.

By Carrie Whitney, Ph.D.

You think stainless steel is a strong metal. So would it surprise you to learn it can't hold an edge when it comes to your hair?

By Kristen Hall-Geisler

Sports injury taping has undergone a quiet revolution over the last 30 years. How can a pattern of tape stuck to your body help you heal from (or prevent) an injury?

By Stephanie Crawford

Glass ionomer cement is a kind of cement used in restorative dentistry. Learn what glass ionomer cement is in this article.

By HowStuffWorks.com Contributors

Building bicycles with environmentally friendly bamboo is an idea whose time has come. We talk to a master bamboo bike builder about the ins and outs.

By Carrie Tatro

Nearly everything you use in your life was touched by a CNC machine tool. Don't know what a CNC machine tool is? We'll explain.

By Mitch Ryan