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News: How Researchers Could Use Bacteria to Determine Time of Death

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.

How To: Sort files into folders using Automator on Mac OS X

With OS X, you can use Automator to automate several functions. This nifty little how-to by macmost shows you how to sort files into sub-folders using Automator. You can use Automator to alter what happens when a file is added to a folder. In this example, new files added to a folder are then sorted into subfolders according to their type. You can add multiple actions to a folder and then determine which order they are used.

How To: Determine if your toilet tank's flapper is faulty with tips from Lowe's

This video is about your magical bathroom device— 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.

How To: Predict the outcome of a coin toss when you flip

Most of the time for official coin tosses the interested party calls the result while the coin is in the air. Often, the coin is allowed to land on the ground to prevent tampering. Assuming that you are in a flipping situation where you are flipping it into your hand and calling it when it gets to the hand, it is pretty easy to guess the result accurately. This video will show you how to do so by rubbing the coin quickly to determine whether it is bumpy-side (tails) up or smooth-side (heads).

How To: Use the Pythagorean theorem in geometry

Need help figuring out how to determine the length of the sides of a right triangle? Need to know how to solve a matrix-form linear equation in algebra? 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 superst...

How To: Determine whether two fractions are equivalent in math

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...

How To: Use VLOOKUP queries inside of an MS Excel IF function

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 588th installment in their series of digital spreadsheet magic tricks, you'll learn how to determine whether an employee is exempt from a tax using a VLOOKUP in an IF function, and if not use a second VLOOKUP lookup query to look in tax tables to look up and calculate the tax

How To: Add strength to a landscape patio wall

In this video tutorial, viewers learn how to add strength to a landscape patio wall. For reinforcement, users should insert metal pipes down through the wall. To do this, users will need a sledgehammer, 1/3" pipe and a large diameter pipe cutter. Determine the length of the pipe by adding 2 feet to the actual length of the wall. Cut the pipe to the length and insert the pipe down through a large diameter hole on the wall. Remove the surrounding blocks and use the sledgehammer to drive the pip...

How To: Use a fertility microscope to determine ovulation

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...

How To: Sing high notes for men

The focus of this video is on singing high notes for men. The first step is to identify which mode your high note are sung in: classical, contemporary, or falsetto. For most men around the E flat note of the range determines which of these three routes is natural to the singer. For classical singers there is a distinct throttling around this pitch change into higher notes, a region known as the passagio. Contemporary singers have a more gradually ramping up as they pass over this transition o...

How To: Kill gnats

In this video, Sbirdboi will explain how you can get rid of a gnat infestation. First, you must identify what kind of gnats they are, as this determines the best ways in dealing with them. He will explain three common types of gnats, their habits and where they tend to lay their eggs. After teaching you about the kinds of gnats, you will learn what steps to take to kill the gnats, and prevent them from coming back. You will also learn tips of ways you can attract gnats and subsequently kill t...

How To: Determine the IP address of a email

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...

How To: Create a photo cutout in Photoshop

To add drama to a photo and create some additional pop, this video tutorial shows how to create a photo cutout using Photoshop software. What you need to do is determine what subject in a photo you would like to cut out. Using a cutout and multiple layers, the final impact is an effect that makes the cutout appear as though it is extending beyond the photo's boundaries and into white space. By following these steps, you can create additional interest or emphasize a certain part of a photo usi...

How To: See who is connected to a computer with netstat

Want to see whether your PC is being accessed by hackers? Netstat (network statistics) is a command-line tool that displays network connections (both incoming and outgoing), routing tables, and a number of network interface statistics. It is available on Unix, Unix-like, and Windows NT-based operating systems. This video tutorial presents a basic introduction to working with the netstat tool. Determine whether you've been hacked with this how-to.

How To: Use pediatric resuscitation equipment in nursing

Studying to be a pediatric nurse? Then here is a nursing how-to video that teaches you how to properly use pediatric resuscitaion equipment in the hospital. Every nurse should know the basics, follow along and see how easy it is to use the Broselow Medical Guide and pediatric emergency tape. The Tape is intended to be a guide only in determining specific drug dosages. The clinical condition of the patient in combination with the providers clinical experience and training should always be used...

How To: Change a Phone's Coordinates by Spoofing Wi-Fi Geolocation Hotspots

In many urban areas, GPS doesn't work well. Buildings reflect GPS signals on themselves to create a confusing mess for phones to sort out. As a result, most modern devices determine their location using a blend of techniques, including nearby Wi-Fi networks. By using SkyLift to create fake networks known to be in other areas, we can manipulate where a device thinks it is with an ESP8266 microcontroller.

News: Samsung Galaxy S10 Review, 3 Months Later: All the Little Things to Know

The Galaxy S10 has finally been revealed to the masses, and it certainly doesn't disappoint. As the flagship to herald the tenth anniversary of the venerable Galaxy S line, the S10 has kept popular and familiar design elements like the immersive Infinity Display while employing new features like more advanced cameras to set a new standard for other OEMs to follow.

Roundup: The 5 Best Capacitive Gloves for Using Your Smartphone in the Cold

For some of us, winter puts the brakes on apps like Pokémon GO since smartphone screens usually only respond to bare fingers. Nobody wants to be that guy who caught frostbite chasing a Sneasel. When you use normal gloves, the display's sensor simple doesn't activate, so that doesn't help any. Fortunately, several options for touchscreen-friendly capacitive gloves are on the market to help you through this last blast of winter.

How To: Tell if Your Steak Is Done Without Using a Thermometer

In my opinion, there is nothing in the culinary world as satisfying as cutting into a steak, and seeing that you've cooked it to perfection. Even if you're one of those bizarre people that prefers their steak medium or well done (hey, no judgement... okay, fine, a little bit of judgement), it's culinary heaven when you realize that you achieved the perfect doneness on your steak.

Hack Like a Pro: How to Conduct OS Fingerprinting with Xprobe2

Welcome back, my novice hackers! I've written a couple of articles on reconnaissance and its importance, and as I've said before, a good hacker will spend 3 to 4 more times doing reconnaissance than actually exploiting the system. If your recon isn't good, you'll likely fail, or worse—end up serving time and becoming Bubba's wife for a couple years. I can't say it enough—recon is critical.