A new study published on April 12 in Medscape gives us an update on the Hantavirus genus of pathogens, which spread viruses via rodents that can cause fatal diseases in humans, such as hantavirus pulmonary syndrome (HPS).
Dating can sometimes be a cruel and embarrassing game. You could be having a great time with someone, only for the situation to turn awkward and uncomfortable when a little bit of information is released, especially when that information is your use of medicinal or recreational marijuana.
Look no further than Flint, Michigan, to discover the serious consequences of contaminated drinking water. Around the world, water polluted by pathogens and toxins sickens people or cuts them off from safe drinking water. Looking for a solution, researchers created tiny, swimming robots that pack a powerful punch against waterborne pathogens.
If you prefer glow sticks over candles during a power outage, then this how-to is for you! Although glow sticks are used as temporary light sources, there are other applications for them. Divers use them for night diving, fisherman use them to catch swordfish, and the military uses them for light markers, along with infrared versions used in conjunction with night vision devices. But with all these handy uses for glow sticks, the most popular is — recreational use, like dancing at raves, some...
This is a cool experiment that shows what happens when we superheat steam. Wath as we move beyond a gas to something else! Steve Spangler is the science man and he'll turn you on to something cool. We usually think of water as a substance used to put out fires... but what happens when water turns to steam and that steam gets superheated? Watch in amazement as the steam created in the experiment is used to create - not extinguish - fire!
In this video, we learn how to properly balance chemical equations. You will see what substances are in each side of the equation. You will then need to count the atoms that are on each side of the chemical equation. Once you write down the number of atoms on each side, you will need to even them out. To do this, you need to change the coefficients within the equation. These change the total number of atoms inside of a chemical. Once you do this, you will add more to each atom present and the...
From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to unpack and solve word problems involving a mixture of two or more substances.
Making a blue glowing substance is easy, as long as you already know the secret to making green luminescent phosphorescent glow powder. By watching the green glow-in-the-dark procedure, you know that you will need strontium nitrate, aluminum nitrate, europium and dysprosium nitrates, and nitric acid. That will make a green glow, but if you want to make a blue version, it's a relatively easy fix...
Origami is one of the oldest art forms. The uniqueness of this art is that it is made with only a single substance, which is paper. Paper is very common and cheap material. This video describes how to make a slice of 3D origami watermelon using paper of green, white and red colors. This can be used as a show piece with other fruits in a fruit basket. This is also a great gift idea. Make a 3D watermelon origami fruit basket to adorn your dining table.
Latte art is a fun, creative way to spice up your average cup of joe. Watch this video to practice your latte art with steamed soapy water. First, pour a drop of dish soap into a latte making cup. then using the espresso machine fill it with hot water. Use the espresso machine to help steam and mix the soap, as if it were a latte. It will turn into a white, frothy substance. Then pour the soapy water into a coffee mug. Use the latte cup's guide to make sure you pour at the right angle. Watch ...
This short video is about melting a styro cup without fire. It's magical. Anyone watching it would wonder what had happened to the Styrofoam cup which was dipped in Acetone, nothing but common nail polish remover. This is a short and cute video and watching this could be fun for kids. The fun element comes at the later part of the video. This would kindle the interest of kids in trying out the reaction of different substances in various solvents.
Cleaning gutters is really not that hard. Get out your ladder and position it so that you can reach the gutters. Start by removing all the big stuff such as twigs and bigger sticks that have gotten into the gutter. These bigger items can be removed with your hands. What is left can be pretty yucky? There is a mud like substance that is made up of water, decomposing leaves, newer leaves, and smaller sticks that you won't want to touch. So use a scoop made out of a mild container that is cut in...
Not sure how to safely clean your wood table without ruining it? In this video tutorial, learn how to properly wipe off your table and how to protect it with a sealant called, Pastewax. This substance dries and does not attract dust making your table look shiny & new, like a piece out of a museum!
Everyone loves a magic trick, especially when you wow them with a seemingly normal object. In this trick, take a regular coin and make it disappear and move around magically! Soon, you will be the hit of every party!
It’s time for science. You are able to calculate the molar mass for a compound using the periodic table and the amount of compound involved. You might need to know this in your everyday life but you will definitely need this in a chemistry class.
In this video we learn how to balance chemical equations properly. What is a chemical equation? It's a statement that uses a chemical formula to show identities and relative amounts of the substances involved in a chemical reaction. To balance an equation out you must have the same number of atoms on both sides of the chemical equation. Or, you must have the same amount of mass or matter on both of the sides. Once you have these balanced out so they are the same then you will have it complete...
Fondant is one of a pastry chef's favorite substances because it's so versatile. You can use fondant to coat a cake with an even, smooth surface, you can shape fondant into little adornments like fish and ladybugs, and you can even employ fondant to decorate cookies.
In this video, we learn how to evaluate a woman's body toxins. The best way to do this is to evaluate your life and your career. Different careers can expose you to toxicity. Another thing is test that your doctors can give you, that look at urine, blood, and saliva for toxic substances. These are not for everybody, just a certain population. But, the accuracy of these tests have not yet been proven scientifically. Not everyone needs to go on a detoxification diet, but it certainly can help y...
Protecting your home from water sounds like an easy enough task. It's only water, right? Well wait long enough and you'll find out that water always wins. Whether it builds up in your walls or in your basement, some sort of damage will arise due to the wet substance. But there are ways to hold back the water in order to protect the very space you live in.
In this Outdoor Recreation video tutorial Dave from 'journey the outdoors' explains how to make a bench shooting bag. This is used by bench or week-end shooters for recreation purposes. For this you will need an old sock. Take one that you don't use anymore and preferably a tight knit sock. Then fill it with rice and tie the open end of the sock. You can also fill it with beans or some other such substance. Rice and beans being bigger than sand, there will be more air in the bag and it will a...
How much air is actually inside a packing peanut? There is a simple experiment to conduct to see what is leftover. To begin, pour 200 ml of acetone into a glass container and add approximately 1800 ml of packing peanuts. Stir with a wooden spoon to dissolve. The video's author starts with the 1800 ml and realizes that that isn't enough. He then keeps adding until he has added an entire large bucket to the original 200 ml of acetone. After all are dissolved, all that is left in the glass conta...
In this Home & Garden video tutorial you will learn how to make a concrete counter top mold. Fu Tung Cheng from Concrete Network presents this video. For making different edges on your counter top, a compound called polyurethane is used for making the mold. It is a two part compound mixed together to form a rubbery substance. While using polyurethane follow the manufacturer’s recommended dosage, time, proportion and also use the recommended release agent. Take a piece of the molding wood and ...
This video shows you how to calculate the percentage yield in chemistry. To find the percentage yield, you will need to divide the actual yield by the theoretical yield. Then, multiply it by 100: i.e. % yield = actual yield/theoretical yield x 100. An actual yield is the amount of a substance produced in an actual laboratory experiment. It is based on an actual physical measurement of a quantity. The theoretical yield is the yield as is calculated on paper: i.e. through calculations. Therefor...
The way to convert 0.300 Moles of water into Grams is to start by writing what you have. Then put grams on top and moles on the bottom, then put one by the mole, the omler mass goes by grams. Now you figure out the moler mass of water which has 2 H and 1 O, its 2 times 1 which is the atomic mass for hydrogen plus 16.0 for oxygen which gives a total of 18.0 g/mol. So then you insert the 18 up by the grams, now you can cancel out the moles and multiply 0.300 times 18.0g and it gives you 5.40 g,...
JohnnyRawAppleseed demonstrates a delicious dish of raw vegan tuna pate. This is healthy and delicious. You will need some sunflower seeds, lemon, dill, oil, salt, parsley, onion, celery and pickles. Chop all of these up, throw them into a blender, add roughly one to three tablespoons of raw tuna, and you will then blend to a fine mushy substance. This is ideal for spreading or using as a topping, even throwing onto a sandwich or a salad. Crackers, toast and various chips can also be used. So...
Things you'll need: A quarter of Squash, sliced 1cm X 5cm X 4cm Half a bundle of String beans (long), cut 2 inches long 1 bundle Okra, cut into 2 3 Eggplant, cut into 8 parts 1 bulb Onion, sliced 4 cloves of medium
Shiny marble floors practically scream "wealth and substance"—so if you want your marble floor to scream it too, it's time to get shining.
Watch this video tutorial to see how to make extremely simple scales. This scale is useful when you want to weigh small portions of a substance (like a few grams of powder). It is difficult to get real weight using these scales though. To make this homemade scale, you'll need a plastic bottle cap, a plastic bottle or box, a 9v battery, clear sticky tape, glue for the plastic (epoxy or fast-hardeneing), scissors and a screwdriver.
Awakening the sixth chakra – known as the third eye – also awakens your sixth sense, and unlocks psychic potential. In this tutorial, learn how to harness your spirituality and get in touch with your third eye.
The biceps tendon attaches the biceps muscle to the radius. Learn how to diagnose and treat a biceps tendon tear in this medical how-to video. Usually the area is painful, swollen and bruised.
Check out this instructional RV video that demonstrates how to use the patio awning on your recreational vehicle. Check on these routinely: the lift handle (make sure that the spring is working correctly), and a knob on the back that loosens up the inner arm, and the locking mechanism (which is located on both the front and back arm). Go ahead and open up the awning by taking your awning rod and reach up to the top and unlock it which is always located on the front and none in the back. Then ...
Check out this instructional RV video to learn how to maintain the LP gas system on your recreational vehicle. Open up the compartment and you will see your LP tank. There is a gauge that tells you how much is inside the tank, there is also a fill station where you fill it up, always make sure the cap is returned after filling it up, so no debris gets inside. There is also a pressure release valve so when you are filling it, the pressure can escape through there so you can get the proper amou...
A laser light show is possible to replicate with the diffraction grating effect. Different laser effects can be created using a variety of materials: small motors and diffraction grating pieces, and mirrors. It's possible to create searchlights, crystal balls, spring patterns, a Galvanometer effect, and a spider web. Watch this video circuitry tutorial series and learn how to replicate professional laser show techniques for recreational use at home, or as an accompaniment to music or any pseu...
Skateboarding is a fun and challenging recreational activity and competitive sport. Get started skateboarding with the skills, techniques, tips and tricks in this free series of skateboarding video lessons for beginners.
Motorcycles are two-wheeled motor vehicles that are used for cruising, racing and other recreational activities. Learn the basics for riding motorcycles from an experienced motorcyclist in this free sports bike video series.
In this video, we learn how to make slime for under 5 dollars. You will need: a large pan, gallon of water, food coloring, and 1 c corn starch. Mix in warm water and continue to mix until everything is well combined. Keep adding more water to corn starch until it's the consistency that you would like. After it's hot and a slimy substance, add in some food coloring that you would like. After this, pour the slime into individual containers and allow it to cool so you can use at a later time. Wh...
In this tutorial, we learn how to create an erupting volcano. First, take ammonium dichromate and pour it into a clear plastic dish. Next, grab a blow torch and blow it onto the material. This will make a substance that is black and looks like ash. This will get messy, so make sure you have a newspaper or cloth underneath the dish. Eventually, the material will catch on fire so you can remove the blow torch, then the ash will fall all around the volcano and the sparks will fly out of the midd...
Cotton candy is a treat generally reserved for carnivals, fairs, and other events that don't come around often enough. Through some clever construction and about $45 in materials though, you can have all the sugary substance you could ever want with this awesome DIY cotton candy machine. All you'll need to construct your own are two dollar store stainless steel bowls, a fan motor, a few odd screws and bolts, a drill, and a propane torch. Check out the tutorial video below. As an added bonus, ...
Essay writing is the bane of most students' educational existence. Whether you're a college student tired of slaving away over 30-plus page research papers or a high school student just trying to get through AP Language, chances are you'd love to find a way to cut down on all the writing. Before you spend hours googling facts and figures to cram into your next paper, work smarter by cutting down on content.
Sword fighting, or saber fencing, is a recreational sport that tests quick action and solid defense. Learn more about saber fencing from our fencing expert in this free video series.
