Preliminary Studies Search Results

News: Why Skim, Low, & Reduced-Fat Milk Are Actually Worse for You Than Whole Milk

I don't drink a lot of milk, so when I do, it's always whole milk. I'll drink two-percent if it's the only kind available, but skim? I'd rather have none at all. Tons of people buy reduced fat milk because they're trying to eat healthier, but to me, the extra calories are totally worth it. And, contrary to popular belief, whole milk is actually better for you anyway. Just like diet soda, the downsides of reducing the number of calories in milk outweigh the benefits. Studies have found that co...

How To: Find a data point (Xi) with the Z-Score formula

In this free video math tutorial, we learn how to use the Z-Score formula to find a data point (Xi) in statistics. With mathematics, as with anything else, not everyone progresses at the same rate. Stats is no exception. Happily, in the age of Internet video tutorials, this isn't a problem. Those who progress quickly can go beyond what's being taught them and those who are struggling likewise have all the time in the world to catch up. Whether you need help finishing your homework or studying...

How To: Use dry shampoo to refresh your hair and add volume

If you're studying for your SATs or cramming for finals in college then dry shampoo is more than just a helpful tool; it's nearly indispensible if you want to look alive (rather than like you only got 1 hour of sleep). This is, of course, especially useful if you've got work immediately after a finals exam and can't look like a famished hobo.

How To: Add or subtract fractions in basic algebra

Could you use a little help figuring out how to sum and subtract fractions? Watch this free video lesson. 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 free math tutorial, you'll learn how to add and find the difference between fractions.

How To: Solve standard-form linear equations in algebra 1

Looking for a primer on how to solve a standard-form linear equation in algebra? Learn how with this free video lesson, which offers examples of how to use the x and y intercepts of a line to write the equation of the line in standard form. 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 o...

How To: Draw dragon wings

This is a video in which drawing artist Wayne Tully demonstrates an easy and simple method of drawing a dragon's wing. Wayne points out that the dragon's wing is identical in shape to a bat's wing and advises the viewer to study some pictures of bat's wings. This helps one get a good idea about what a dragon's wing should look like. Shading the inside parts of bone structure of the wing improves the quality of the drawing and gives it a realistic feel.

How To: Create an origami fortune teller

Remember when you were a kid and you would play fortune teller games in study hall? We all do! Check out this tutorial and learn how to fold an origami fortune teller. Whether you are using it to fool around during class as a teen, or in the office as an adult, people never get bored of this great bit of nostalgia. All you need is a piece of paper and a pen to mark your corners and you are on your way to telling the future!

How To: Draw a female anime face in profile

In this how to draw video the artist shows us how to draw an anime face in profile. The artist explains to she doesn't use guidelines to draw the profile, though some people do. She tells us that she used to have a very hard time drawing profiles at first, but practiced a lot and studied profiles so that she was able to get better at it. She says that with hair she likes to draw loosely and lightly. While she talks she continues to draw and demonstrates as she explains. She suggest practicing...

How To: Make beer-batter onion rings

Looking for a satisfying snack you can whip up in minutes? Try this recipe for delicious beer-batter onion rings. Explore the sizzling relationship between America's most popular grown-up beverage and an everyday vegetable. Let's make some beer-batter onion rings. If you're having trouble parting with a can of the good stuff for this recipe, consider this: A New Zealand study found that adding beer to batter helps reduce the oily fat content of fried food by as much as 40 percent. Yep, that's...

News: Dying Cells Do Tell Tales & What We Learn Can Help Us Stop Cancer from Spreading

As our cells age, they eventually mature and die. As they die, they alert nearby cells to grow and multiply to replace them. Using a special imaging process that combines video and microscopy, scientists have observed the cellular communication between dying and neighboring cells for the first time, and think they may be able to use their new-found information against cancer cells, whose damaged genomes let them escape the normal dying process.

News: Sentinel Nerve Cells Spy on the Intestines, Linking Gut & Brain

If the all the fingerlike projections in our gut were flattened out, its surface area would be 100 times bigger than our skin's. It's so large that the actions of just a small part of it can impact our health. A new research study has found that enterochromaffin cells in the intestinal lining alert the nervous system to signs of trouble in the gut — trouble that ranges from bacterial products to inflammatory food molecules.

News: How Virtual & Mixed Reality Trick Your Brain

Our brains do a magnificent amount of work to process visual stimuli, but they aren't difficult to fool. Optical illusions can trick our minds into believing what we're seeing is real, even if it's not—and virtual and mixed reality technologies take advantage of this little loophole in our brain to help us accept the unreal.

How To: The Only Seasoning Your Cast Iron Pans Will Ever Need

Cast iron pans are a timeless treasure—they're an essential kitchen tool that will stand the test of time, and no home kitchen is complete without one. However, they do have a reputation for being difficult to care for... with arguments both for and against regular seasoning. In 2010, a blogger named Sheryl Canter claimed that she found the best way to season a cast iron pan that would keep the cast iron from rusting... or requiring re-seasoning! And after a few hands-on test by Cook's Illust...

How To: 10 Reasons Why It's Better to Be a Jerk

Nice people finish first—or is it last? Though you may have been told throughout your life that being kind pays off, there are some obvious advantages to getting mean. So whether you're driving towards a goal at work, or need to attack a task in your personal life, acting like a jerk just might help you get what you want.

How To: You’ve Been Taking Pills Wrong Your Entire Life—Here’s How You Should Be Swallowing Them

It's a rare person who enjoys swallowing pills—and equally rare to find those who can toss a pill back easily and effortlessly without gulps of water and coughs. The transition from liquid medicine to pills, tablets, and capsules can be a rough one, and some of us still struggle well into our adult lives. Yet the reason your pills are getting caught in your throat may not be the medication's fault—it's all in how you swallow.