Making Liquid Nitrogen

The Leidenfrost Effect: “a phenomenon in which a liquid, in near contact with a mass significantly hotter than the liquid’s boiling point, produces an insulating vapor layer which keeps that liquid from boiling rapidly”. It looks pretty spectacular captured at 3000 frames-per- ...more

Theo Gray of Gray Matter explains the principle behind sending steel up in flames- as long as it's steel wool, of course. The process is beyond simple. Spend 2 bucks and 2 minutes: purchase a steel wool pad, hold in pliers, light with a match. But the question is, why is steel ...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 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

Weather - there's no escaping it! Mother Nature can be hard on asphalt: if you live in an area where there are extreme weather changes from season to season then your asphalt will eventually become damaged. As the ground freezes and thaws there is movement that flexes the asph ...more

Get the requirements You will need a plastic cap (from a bottle), PVC pipe, and a tube with a diameter not larger than the cap's. Cap. PVC. Tube. Drill some holes You need to drill 2 little holes, one in the cap, and one in the PVC pipe. It should look like this: Hole in c ...more

I know, "Steamdown" conjures images of a hoedown, but "Steampunk prop breakdown" is a bit of a mouthful, I thought. Anyway, I'm going to show you how I made my very first Steampunk prop! It doesn't require any tools at all, just some glue and some parts from the hardware stor ...more

Scented candles tend to magically turn a house into a home. The light flicker of the flame gives a relaxed or romantic tone to the atmosphere, and keeps the space smelling fragrant for hours. The only problem? Wax melts, and the candle becomes worthless after the wax is all go ...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

In my last quick clip, I demonstrated how to take a bottle of soda and freeze it on command. I received many requests for a more detailed article on this, so here we go. This "super cool" trick works with cans of soda too, not just bottles! Video: . This project was inspired b ...more

Bored of using your bottle of dishwashing soap for just washing dishes? You're in luck. Not surprisingly, the soapy liquid commonly used for removing stubborn food build-up from your eating utensils can also be used as a general cleaner for washing windows, removing clothing ...more

The best part about April Fool's Day is that everyone is fair game. Even big tech companies like Google and Twitter get in on the action every year. It encourages even the most uptight, unfunny party-poopers among us to have a little fun driving each other crazy with pranks — ...more

Whether you're a serious, sweating athlete or just need to recover after a night of drinking, chances are you've replenished your body's fluids with a sports drink at some point. Those electrolytes aren't the only thing entering your systems, though. Sports drinks are sugary, ...more

Pie crusts are pretty intimidating if you're an at-home baker with little experience, since there's a lot of science behind making them. A perfectly flaky crust that's golden brown—not charred and black along the edges—requires careful attention, a foolproof recipe, and some d ...more

Incredibly tiny in size, splinters can be frustratingly difficult to remove from your skin. If large and not completely embedded, a splinter can usually be extracted using tweezers, tape, or glue, but if it's small and in there pretty good, you'll have to get more creative. O ...more

2017 was a down year for HTC. First, the U11 and U Ultra were widely criticized. Later, Google purchased a large chunk of HTC's manufacturing division, leaving the Taiwanese company running with a skeleton crew after losing 2,000 key employees. But that's not stopping HTC — th ...more

Many of us are guilty of sacrificing a delicious breakfast for a few extra minutes of sleep in the morning during the busy work week. Grab-and-go breakfasts are definitely timesavers, but granola bars and other packaged items often lack the fresh breakfast feel that makes the ...more

There are rules that cooking in general always follows: cakes should be fluffy. Steaks should be heavily seasoned, and nowhere near a bottle of steak sauce. Every stock should start with aromatics (onions, carrots, & celery). And, until very recently, meringues should always b ...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

Mouthwash, the liquid concoction commonly used for giving the inside of your mouth a thorough cleaning after brushing, is also not surprisingly useful for making things clean and bacteria-free. Like minor cuts and wounds. Or your toilet bowl. Or your toothbrush. Or your garbag ...more

Bill Beaty is our favorite kind of science teacher. Here he gives us a lesson in cavitation. Sounds boring, right? Ha! Not when he teaches us a wild trick to illustrate this physics phenomenon! Bet anyone holding a beer bottle that he can't break it using only his hands. Se ...more

When we tell folks how often we use apple cider vinegar, they are baffled and bewildered. "I've had a bottle sitting in my pantry for 10 years," is the response we encounter most. And "I never use it!" Some have never even used apple cider vinegar at all in their lifetime, bel ...more

Pickles are insanely versatile: we eat them on their own as a snack, as a tasty zing on burgers, and some of us even like them in a sandwich with peanut butter. And if you're already an avid reader of our site, you'd know that we're even crazier about pickle juice and its myri ...more

Brining is magic. All you have to do is make a mild saline solution, toss in your protein of choice, let it soak, and cook. You end up with incredibly tender, flavorful meat or tofu for very little effort. So why aren't more of us doing it? Pork chops soaking in a brine of sug ...more

Whether you need very temporary skin art for a costume or simply want to test-run a potential tattoo design before it gets permanent, making your own temporary tattoo only requires wax paper, a printout or drawing of your desired design, black eyeliner, rubbing alcohol, baby p ...more

Sangria... the elixir of summer. When properly prepared, there are few things more refreshing and magical. If you're looking for a way to mix things up and "get out of the bottle," try one of these lovely libations before the warm weather ends: peach-mango sangria, pineapple-b ...more

The sweet aroma of cooked fruit filling your kitchen is one of the trademark scents of summer. Yet attaining the perfect consistency for homemade jam can be difficult to master. Often it ends up a watery mess or over-solidifies into thick mystery goo that is destined for the t ...more

Castile soap is named for Castile, Spain, and is traditionally made from locally produced olive oil from the region. In current times, Castile soap refers to a category of soap that is made from 100 percent plant-based oils and does not include chemical detergents, making it a ...more

I love making stock. It's thrifty because you get extra use out of poultry bones and vegetable peelings, plus having homemade stock on hand makes so many things taste better, from soup to stews to pasta sauces. If you deglaze a pan, homemade turkey stock, booze of some kind, a ...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

It's that time of year again. The month after we exchange gifts, most of us tend to exchange germs. Cold and flu season always seems to creep up on us, often leaving us ill-prepared to deal with the ailments. For those of you suffering from fits of coughing and a sore throat ...more

The first written account of "stock" as a culinary staple goes back to 1653, when La Varenne's Cookery described boiling mushroom stems and table scraps with other ingredients (such as herbs and basic vegetables) in water to use for sauces. But really, the concept of stock has ...more

Cool, refreshing fruit, ice-cold margaritas (or beergaritas), and popsicles... this combination of food and drink just screams summer. Turn up the chill jams on the stereo, fire up the grill, and throw on your shades—you're just one pool away from the best summer party ever. ...more

One lump or two? That was the age-old question with sugar cubes, which used to be a staple of any tea salon or dignified household this side of Downton Abbey. These days sugar isn't really used in cubes much except in bars and restaurants, and that's a shame. Cubes are a lot l ...more

Pickles are one of those rare foods that most people love, but never even think of making. Most home cooks shy away from making pickles because they take time and patience, and because the grocery store option is both cheap and delicious. I'm very much one of those people who ...more

Poor chickens. Bacon fat is revered (and justifiably so), and duck fat is a staple at most fine grocers. Marbles of fat make a steak divine, and goose fat is the holy grail of fatty goodness. Yet chicken fat is usually thrown away. If you're one of those people who roasts a c ...more

Once upon a time in America, there was coffee and there was decaf. That's it. No capuccinos. No espressos. And certainly no Starbucks. Coffee was just coffee, something that you bought at a gas station or donut shop. If you made it at home, it was either in a metal pot or inst ...more

Cooking isn't something that interests me much, unless it results in a fast burning fuel and a successful rocket launch! WARNING: Ignition of an incendiary or explosive material may not be legal in your area, so check local laws before attempting. Use of this video content is ...more

Besides being one of the super nutritious "superseeds," chia seeds also absorb liquid and then take on a jelly-like texture. These properties make chia seeds the perfect hack for an easy, healthy jam compared to the normal jam-making process—which usually requires lots of suga ...more

The war on dehydration is a commercially burgeoning marketplace. An increasingly sophisticated consumer population hoping to conquer everything from 26-mile marathons to vodka shots is deconstructing every functional remedy in the fight to quell the effects of severe dehydrati ...more