Dissolve Metal with Acid

It is the file cabinet from Hell. Look what came in the mail today! Die hard Jackass fan and file cabinet mod-junkie Jeff Dahlin tracked us down to drop off this gem at WonderHowTo HQ today. It is his official entry for the Jackass Prank Contest. It's a three-wheeler, does tha ...more

We've all been there before: We're in a hurry to get somewhere (often in bad weather), so we get in the car, turn the key in the ignition and.....WHUH! WHUH! WHUH! The darned battery is dead! After a stream of choice expletives (that is, if you're anything like me....;o)), we ...more

I finally got around to trying out another one of Will's mad science experiments and found out that this one was actually more satisfying (and less frustrating) than my slightly uncooperative jar jet. There's something very pleasing about making potassium nitrate at home in th ...more

Torus knots are beautiful knots formed by wrapping a line around a torus and tying the ends together to form a loop. The resulting knot has a star-like appearance when viewed from above. The 36 examples with the least number of crossings can be seen at the Knot Atlas's page on ...more

I love making my own printed circuit boards. It really gives a professional look to a finished project, and having all the design files means I can whip up another batch whenever I need to. However, when I need to make, say, three thousand swarmbots or fill an order for a doze ...more

The best chemistry experiments are those you can perform with items already laying around your house. With only some sugar, salt substitute and an instant cold pack, you can make your very own gunpowder! Being able to make homemade gunpowder without a trip to the store can be ...more

I have an absolutely wonderful time making projects and writing articles for all of you mad scientists! Today, I will bring you behind the scenes for a look at the workbench, tools, and software that make the Mad Science World possible. Above is my beautiful workbench! My who ...more

An innovative new wound dressing has been developed by a research team at Lodz University of Technology in Poland that uses crustacean shells to create a bandage that packs an antimicrobial punch — and even more potential to help solve a global problem. Bandages typically hel ...more

Desserts always taste better when they are sugar-coated—and even more so when they're coated in powdered sugar. In particular, crinkle cookies—cake-y cookies that are chewy on the inside and crispy on the outside—are famous for the powdered sugar that creates their cracked app ...more

Minor mishaps occur all the time in the kitchen, whether you cut your finger while dicing an onion, scorched your hand in a grease fire, or burned the roof of your mouth because you were to eager to taste-test your killer pasta sauce. While the old standbys of ibuprofen, band ...more

Break out the office supplies and kitchen utensils, because improving your morning makeup routine is about to get a lot easier. Some of the things you have lying around the house can provide the perfect solution for some of the most common beauty problems. We've collected 10 o ...more

Cast iron is one of the best surfaces to cook on, but taking care of it is a whole 'nother story. It's not as simple as just washing it in soapy water like all of your other pans, and everyone has different ideas about how it should be done. It seems intimidating at first, but ...more

We've shown you how to make water change color on command, but how about just half of it? What if I told you that you can split a solution right down the middle and make the color disappear from one side, just by shining light on it? With the help of a little stain called thi ...more

Fluorescent dye can be a great addition for decorating around the house for Halloween, especially for a haunted one. Creating your own fluorescent dye is a simple experiment, as long as you've got the proper chemicals and safety gear. Nurd Rage details the chemical process of ...more

White or light-colored dinnerware is a classic: it looks crisp, clean, and elegant. The only problem is that after you've used it for a few years, the surfaces bear a lot of grey scuff marks from forks, spoons, and knives being dragged across the surface. It's tempting to don ...more

You probably already know that cooking involves a ton of chemistry. Bread rises because of the reaction between the flour and leavener, and the delicious crust on your steak is formed by the Maillard reaction. Understanding the chemistry going on behind the scenes is one of th ...more

Acetone-based nail polish remover is great for removing nail polish, and it's also great for some DIY uses around the home. From eliminating scratches to fixing the consistency of correction fluid, its uses are varied but all effective. With nail polish remover, you can also c ...more

Some bacteria can already do it—generate electric current, that is—and those microbes are called "electrogenic." Now, thanks to the work of a research group from the University of California, Santa Barbara, we know how to easily turn non-electrogenic bacteria into electricity ...more

Whipped cream is one of the most iconic dessert toppings around, but the full-fat version is not the most forgiving when it comes to fat content. With the holidays just around the corner, learn how to spare yourself a few calories—especially if you love the creamy texture of w ...more

Taking care of your car requires effort, whether you take it to the pros for washes, waxes, and detailing, or you spend time to make it shine yourself—and it often seems that, right after your car is sparkling again, rain or midnight moisture appears to cover its surface in wa ...more

Onion scrubs, salt and olive oil blends, a baking soda slurry... despite the many methods already out there to clean your (old or brand-new) cast iron cookware, there's one you may not have considered: using a potato. Don't Miss: The Ultimate Potato Cheat Sheet According to ...more

Yes, I know it's autumn and the trees are losing their leaves, but the seasons do not decide when I can or cannot enjoy ice cream. No matter how warm or cold is is outside right now, I will remain completely fascinated by rolled ice cream. Yes, rolled. Video: . Don't Miss: Cre ...more

Contrary to popular belief, sushi is not the raw fish that one gets at Japanese restaurants, but the rice that comes with it. It's hard to tell whether this popular misconception led to or came about because of the primary flavors that we think of in sushi are the fish. We oft ...more

Cleanliness is next to godliness. My interpretation of that age-old adage means that keeping your house clean is just as un-fun and boring as being a goody two shoes. That's why they call things like laundry and doing dishes "chores," I assume. Yuck. Lucky for you, though, we ...more

You may have had to deal with this unfortunate scenario when you have a hankering for homemade ice cream: you find a great recipe, just the flavor you want to make, you start reading it... and you discover those ever-dreaded words "pour into your ice cream maker and process ac ...more

Gravy is a relatively simple dish, yet it's remarkably easy to mess up. We've all experienced the disappointment of excitedly pouring gravy onto our mashed potatoes, only to realize it's too runny, too lumpy, or too bland. And because gravy is so simple, even if you don't mess ...more

One of our favorite kitchen items, hands down, is a good old-fashioned wooden spoon. It's practical, versatile, and can last for decades if cared for properly. There are specific ways to nurture wooden utensils in order to keep them from cracking and to help them maintain thei ...more

One of the best qualities about fresh bread (such as sourdough) is a thick, crispy crust—which is easy to create in a commercial oven, but can be tricky for home cooks to replicate. Luckily, the the trick to baking a professional-style crust is a simple one—just bake your loaf ...more

If you're careless and tend to leave your knives lying around or in the sink, chances are you've struggled with rusty blades. Water, as it turns out, is enemy number one when it comes to keeping your knives in mint condition. To be more specific, leaving water on them for a p ...more

How can a drug used to treat cancer be effective against viruses, too? The answer lies in the drug's shared target — specifically, cellular components that control the activity of genes. A new research study showed that one such type of drug, histone methyltransferase inhibito ...more

For about a million Americans each year, a joint replacement brings relief from pain and restored mobility. But, 5–10% of those people have to endure another surgery within seven years, and most of those are due to an infection in their new joint. If doctors could treat infect ...more

Dulce de leche is a beautiful, caramel-like spread that you can slather onto bread or use to flavor cakes, cookies, or flan. You can also use it as a drizzle for ice cream, chocolate candies, and pastries. It tastes like heavenly toffee, translates roughly to "milk candy," and ...more

Many home cooks were taught never to press down on a burger as it cooks since that would ruin your all-beef patty by getting it to release the juices it needs to stay tender and moist. Turns out that is total hooey—a complete myth. In fact, wildly successful burger chains Sha ...more

All fields of study have their own language. For people interested in learning about microbes, the language can sometimes be downright difficult — but it doesn't need to be. From antibiotics to xerophiles, we have you covered in an easy-to-understand glossary. Terms are liste ...more

Many people drink green tea for health reasons, and it's no wonder. This beverage is a superstar when it comes to antioxidant levels, and is being studied for its potentially curative properties on multiple health concerns, whether it's staving off the aging process or fightin ...more

Foodies and big-time chefs like Thomas Keller go crazy for fleur de sel. This finishing salt appears in fancy eateries and cookbooks the world over, and in the early 2000s, it was not uncommon to see diners in a high-end restaurant sprinkle a pinch of fleur de sel on their pla ...more

In this article, I will be showing you how to make a crude form of aspirin from the bark of a willow tree. It is a great remedy for headaches, hangovers, and other minor pain. The use of the willow tree as a mild pain reliever goes back to the Native Americans, who used it in ...more

Right now is that magical time of year when the general public decides to embrace their inner fattie and get baking in the kitchen. Hello, pies and cakes and cookies and everything carbs. Goodbye, diets—see you in the next year, when you cripple us with unbridled guilt and lon ...more

Making a good pie crust can seem intimidating to the uninitiated, but once you master this skill, a whole world opens up to you. Not only can you make all manner of fruit, custard, and cream-filled pies once you know all the tricks, you can branch out into the world of quiches ...more

Will the predicted apocalyptic date — December 21st, 2012 — really be the end of the world? In this ongoing five-part series, we examine what would happen if zombies, nuclear weapons, cyberwars, earthquakes, or aliens actually destroyed our planet — and how you might survive. ...more