When a dead body is discovered, finding out when the person died is just as important as finding out how the person died. Determining the time of death has always involved lots of complicated scientific detective work and less-than-reliable methods. However, a study by Nathan H. Lents, a molecular biologist at the John Jay College of Criminal Justice in New York, is the first of its kind to show how microbes colonize a body's ears and nose after death.

Everyone hates to feel like they've been taken advantage of, especially when buying a used vehicle. The thought comes across every car buyer's mind... "Did I just get taken by that smooth-talking salesman?" When it comes to cars, how do you know if you're really getting a good deal, or if you're being offered a fair price for your car? After all, cars are most peoples second largest investment, so we need to make this decision wisely.

A lot of people with premade PC's and even some that built their PC dont know if they can play that newest game so here is a little help.

Netflix has received a lot of publicity lately, and not because of its impressive worldwide library. From blog wars with Comcast to streaming deals with Verizon, it's easy to forget that the company exists for our entertainment, but sometimes that entertainment has drawbacks.

C For Chemistry delves into the chemistry of science experiments. This chemist knows what he's talking about. These chemistry experiments are not only fun, but very educational for all of those interested in scientific chemical reactions and properties.

Ever watch a cheesy movie and say "That monster is so FAKE!" but not really understand why? Well monstrous monsters are governed by a little biological rule called the Square-Cube Law, a scientific term combining math, anatomy and physics into one educational tool to recognize theatrical baloney when you see it. Just watch this video to see the explanation of the Cube-Square Rule, how it works and its ramifications for our favorite B-Movie pet monsters.

Before you remove any wall in a home remodeling project, it's essential to determine if it's a load-bearing wall or not. If you rush ahead without making sure first, you just might bring the roof down on your head! In this video, Tim Carter, of Ask the Builder, will show you how to determine of a wall is load-bearing or not before you remove it.

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 determine the eigenvalues of 3x3 matrices in eigenvalues.

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 17th installment in his "Excel Business Math" series of free video lessons, you'll learn how to define prime numbers, determine prime factors, reduce fractions (i.e., write fractions in their lowest terms) and convert mixed numbers to imp...

Makeup artists often throw around terms like "cool undertones" and "warm neutrals," but when it comes to buying a foundation, most women select one by swiping it on and then wiping it off.

The Salmonella eggs outbreak sweeping the nation is mammoth in scope, and if you want to keep yourself and your family safe you need to know what Salmonella is and how you can prevent it. This video will explain all of that to you, including the connection between Salmonella and dysentery and how you can prepare eggs to avoid contamination.

In this video Reggie Bennett from the Mountain Shepherd Survival School teaches us a lot about finding edible plants in the wild. If you find yourself forced to survive in the woods, picking the wrong berry to eat could be deadly. Bennett goes over common misconceptions about foraging for food, and shows us the right way to do it.

This video is about your magical bathroom deviceâ€” the toilet. The toilet is a thing that sees a lot of use in the house, and problems can arise from time to time. One of the biggest bathroom issues is a toilet that runs on after flushing, or starts running or flushing by itself. It's a possessed porcelain poltergeist. Lowe's knows that's this problem can really run up your water bill, and they have some advice to stop that leaky toilet.

So you've finally created a nice body-toning workout that consists of all the exercise your body needs to burn calories and stay slim: Push-ups, bicycle crunches, thigh lifts, lateral arm lifts, and shoulder presses. But then arises the second biggest problem after figuring out an exercise routine: How many reps of each do you do?

Need help in determining the amplitude and period of sine and cosine functions? This free video lesson will show you how. 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...

Looking for a guide on how to tell whether two fractions are rationally equivalent to one another? 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...

Another way to track your ovulation cycle is with a fertility microscope. A fertility microscope allows women to identify their most fertile days by testing and viewing the visual changes that take place in saliva throughout the monthly cycle. This method is reliable and effective, and can greatly increase your chances of getting pregnant. All this requires is saliva, so it is not invasive and doesn't use needles. So, check out this tutorial for advice and instructions on how to use one of th...

The author shows how to identify the IP address of a email. He shows how to check the 'Show Original' options in Gmail and in that content how to identify where the email came from and exactly its IP address. Now we can take that IP address and go to any of the many IP lookup websites and trace the original geographical location of that IP address. By following the steps in this tutorial you can easily trace out the origination IP address of an email from which you can extract a lot of useful...

See how to determine whether a set of lines are parallel given their equations with this free video math 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 installment from Internet pedagogical superstar Salman Khan's series of free math tut...

Looking for instructions on how to determine whether two triangles are similar in geometry? 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 ...

See how to tell whether a set of lines are perpendicular to one another given their equations with this free video math 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 installment from Internet pedagogical superstar Salman Khan's series o...

In this Video Games video tutorial you will learn how to determine what is the brand of your Xbox 360 drive. This is a very easy and simple process. There are four brands of drives in the Xbox 360. They are Hitachi, Samsung, BenQ and LiteOn. For this you need to take the face plate off and check the hole under the DVD bezel. If you see a red wire, it's a Samsung drive. If you see a piece of black plastic, it is a Hitachi drive. A gray wire indicates a BenQ drive and if it's a LiteOn drive, yo...

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 calculate the probability of two dependent events in statistics.

In this video, we learn how to determine if a point lies on a line in standard form. In order to do this, you will need to substitute the X and Y value with the ordered pair that is given. The X value is the first number and the Y value is the second number. Re-write your equation, substituting in the numbers to the appropriate spots. Now, simplify the equation by doing multiplication with the negatives and positives (if given). When you get through the equation, you will end up with the solu...

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 119th installment in their series of digital spreadsheet magic tricks, you'll learn how to determine if a particular item is in a list of items using two formulas: a ISNUMBER & MATCH function formula & a COUNTIF function formula.

Dougsimmsonline shows how to determine whether or not 2 triangles are similar. Not only does he go on to show that they are but he describes step by step how to do the math to find missing angles. He does this process twice to show one set of triangles being similar and show the other set of triangles as not being similar. Doug is using a large computer touch screen as his drawing board to show you how this process is done.

If or a friend have an iPod Touch and want to work on it, knowing what generation it is is essential. This video will show you a quick and easy way of identifying which generation of iPod Touch you have.

A good baseball team can't be good unless all of its players are good. And while every player is important to the team's overall success, the batter is usually the one most closely watched and analyzed.

Gourmet editor, Ruth, tells us all about the different graters and why choosing the best grater for each job is very important. The classical grater is called a knuckle bleeder. This is because when you're at the end of the item you're grating, you have to get your hand really close to it and you might scrape your knuckles. The hand grater is easier to use and provides smaller pieces which makes it ideal for most grating jobs. A zester grater is also easy to use and provides more volume than ...

This video will show you how you can easily find out what your IP address is for a computer which is running the Windows XP operating system. You will first need to go to the start bar and click on the button which says "Run". Choose to run a program called "cmd" by typing this into the bar that appears. This will then open up a black box, where you should type in "ipconfig/all". Typing this in will offer you a list of information about the internet service you are currently using and one of ...

In this video the author shows how to find out if a Point lies on a Line in Slope Intercept Form. He shows it by an example where he takes a point, which is an ordered pair in the form (x, y) and a line, which is an first degree equation. Now he substitutes the values of x and y in the equation and checks if both the sides of the equation match. If it matches we can conclude that the point lies on the line. By following the method given in this tutorial you can find out if a given point lies ...

Speccy is a free program you can download and run to determine what your computer's hardware specifications and internal information are. It's important to know the specs for your desktop or laptop so you can determine if a particular software program is compatible or not.

In this tutorial, we learn how to determine if you have a function. You will start off with two functions and their points. The 'x' values make up the domain of the function and the 'y' values make up the range. The input values are the domain and the output are the range. If you're checking to see if you have a function, you will need one 'y' for every 'x'. This means that each value has another one that goes with it. Each of the points need to have one partner with them, no more and no less...

Are you thinking of trading in your 6mpg Hummer for something a little more efficient? Well, if you've got an electric or hybrid car in mind, this video will show you how to make a choice that works for you. With a little program called Electric Car Calculator, you can determine if the savings are worth it for you to get into one of today's hybrid or electric cars.

Eating spoiled meat is a really easy and terrible way to get sick. If you have some old beef in your refrigerator and you're not sure whether it's rotten or not, watch this video for tips on how to determine whether you meat is safe to eat.

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to determine the empircal and molecular formulas of a substance given percent composition. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

The cantaloupe is a troublesome fruit for some melon shoppers, because it's a really hard fruit to tell the ripeness of, like most hard-shelled melons. If you've been riddled with how to bring home the ripest and freshest cantaloupe melon, then YourProduceGuy has answers for you. See how to determine the ripeness of this delicious melon.

Every fruit has a tell. A tell is the perfect way to determine whether or not the fruit is ripe or not, and this video tip from YourProduceGuy will show you exactly what that tell is for honeydew melons. Watch the whole melon video, to make sure you don't bring anymore rotten honeydews home from the grocery store.

One of the hardest fruits to determine the freshness of is the watermelon. It's the biggest question in the produce department of grocery stores, so you're not the only one having problems. This video from YourProduceGuy gives you the tips to finding out what to do when picking out a fresh and perfectly ripe watermelon and the local store. There's a sweet spot for every fruit.

If you bike chain is skipping, and you aren't sure why, you could have a worn-out cog issue. This is especially likely if you cogs are substantially older than your chains. This video will teach you how to assess your cogs for wear. which will help you determine whether you need new ones or need to take other steps to get your bike riding smoothly again.