How Iron & Steel Work

The refining of iron ore is one of the most historically significant achievements of all time. Find out how iron gets turned into steel and what it's used for.

How Nanotechnology Works

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.

How Nanowires Work

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.

How Plastics Work

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.

How Steam Technology Works

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?

How Sword Making Works

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.

How does reverse osmosis work?

Reverse osmosis explains the process of creating drinking water from salty, or otherwise contaminated water. How does this process work? How can you create drinking water from saltwater? Learn about the process of reverse osmosis in this article.