Everyday Innovations

Who invented the toilet? While we wish it were so, it wasn't Thomas Crapper. Surprisingly, toilet design hasn't changed much since the first "water closet" patent in the 1500s.

By Kathryn Whitbourne & Jesslyn Shields

You can find porta-potties at festivals, construction sites and concerts across the planet - but how do they work? Get a closer (non-messy) look here.

When you think of sports drinks, chances are Gatorade comes to mind. But was it the first one? Or just the beneficiary of clever marketing?

By Becky Striepe

Behold the humble spork! Made of the cheapest plastic and seen mostly at public school cafeterias and fast food chains, it doesn't have an inspiring pedigree. But it's been around for a long time.

By Laurie L. Dove

Next Thanksgiving when you find yourself sleeping on Aunt Martha's pullout sofa, it might cheer you up to know that the convertible bed has a long, illustrious history.

By Laurie L. Dove

Better than buttons? Maybe. Less time-consuming than laces? Definitely. As far as fastening mechanisms go, the zipper is a work of art. Learn exactly what makes up a zipper and how it all fits together so perfectly.

By Tom Harris

Pet microchips are supposed to ensure recovery of your lost animal. But these chips have received as much opposition as they have praise. Find out when the devices work and when they fail.

By Jane McGrath

For such a pedestrian item, mirrors resonate deeply in the human psyche. They represent truth and illusion at the same time, and this dichotomy has shown up in literature time and again.

By Gallagher Flinn

A burn injury is one of the most devastating things a body can endure, and until recently, a serious third-degree burn meant certain death. Skin grown in a lab (yes, you read that right) improves the odds.

By Molly Edmonds

Dissolvable stitches are a convenient medical marvel. How long does it take for stitches to dissolve?

You want to make a potato powered light bulb, but you're not sure how to do it. Learn about how to make a potato powered light bulb in this article.

By HowStuffWorks.com Contributors

You want to make a battery powered light bulb, but you're not sure how to do it. Learn about how to make a battery powered light bulb in this article.

Right now, you may be sitting on a chair or walking on a rug made of some type of fabric. Hopefully, you're wearing fabric in the form of clothes! But fabric is easily damaged. So what if there were a super fabric out there that stayed intact?

By Jessika Toothman

It's technical name is sphygmomanometer and it takes your blood pressure. But how does it do that?

There was once no cure for blindness, but artificial vision systems implanted directly on the retina may restore sight. Is a silicon microchip the answer to combating retinal disease?

By Kevin Bonsor

Eyeglasses are one of the most common sights in the world. Learn what goes into creating the lenses and how to read an eyeglass prescription.

By Bob Broten

Whether you're hitting the surf or the slopes or just spending a day on the lake, sunglasses are a must-have accessory. Find out if the $10 sunglasses are as good as the high-cost ones.

By Jeff Tyson

If you've ever been to an aerial fireworks show, then you know that fireworks have a magic all their own. Ever wonder how they make such incredible colors and designs? Learn all about these pyrotechnics!

By Marshall Brain & Austin Henderson

Got a few grays? Just want a new look? Well, if you are like 75 percent of women, you're part of a billion dollar industry. Learn all about hair coloring and choosing the best color for you.

By Marshall Brain

Want to keep your dog out of the neighbor's yard but feeling guilty pulling out a leash? You might consider an underground or wireless pet fence. Learn how these fascinating systems work and why this specialized fencing industry is booming.

By Melissa Russell-Ausley

In the past few years, tooth-whitening has exploded as the physical upgrade of choice. Unlike nose jobs and chin tucks, just about anybody can afford to try this at home. Learn about different whitening techniques and how they work, and decide if you should give it a try.

By Dr. Jerry Gordon

Breast implants are becoming a popular high school graduation present for parents in the U.S. to give their teens. Learn all about breast implants and the surgical process of augmentation.

By Robert Valdes

On July 2, 2001, heart failure patients gained new hope, as surgeons performed the first artificial heart transplant in nearly two decades. The AbioCor Implantable Replacement Heart is the first completely self-contained artificial heart and is expected to at least double the life expectancy of patients.

By Kevin Bonsor

You see light sticks everywhere during the holidays - especially Halloween. Have you ever wondered why these cool light sources glow? What's happening when you crack one? Take a look inside a light stick.

By Tom Harris

They dispense everything from hairspray to cleaning products to whipped cream. Without them, you'd be doing a whole lot of pumping.

By Tom Harris