How to select a computer.

John Hodgman as PC and Justin Long as Mac

The primary decision criteria for selecting a personal computer are:

1. PC, Mac or Linux
2. Ergonomics
3. Desktop, laptop, netbook or tablet
4. Where to buy

Facebook easier-to-use Activity Log.

According to Samuel W. Lessin - Facebook Newsroom.

Today’s updates include Privacy Shortcuts, an easier-to-use Activity Log, and a new Request and Removal tool for managing multiple photos you’re tagged in.

Bicycle and motorcycle dynamics

A computer-generated, simplified model of bike and rider demonstrating an uncontrolled right turn.

Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics is a branch of classical mechanics, which in turn is a branch of physics. Bike motions of interest include balancing,

Science of Liquid crystal.

Schlieren texture on an LCD screen of a PlayStation Portable viewed through a circular polarizer

Liquid crystals (LCs) are a state of matter that have properties between those of a conventional liquid and those of a solid crystal. For instance, an LC may flow like a liquid, but its molecules may be oriented in a crystal-like way.

Microsoft build human computer gestures.

Digits uses "low-power" components to track a
wide variety of hand gestures in real-time

A wrist-worn sensor that creates 3D-models of the user's hand movements in real-time has been built by Microsoft.

10 most common ways hackers access corporate computer systems.

Hacking is often called the biggest danger to the economic security of the United States and the world.

So how do hackers get in the door? Alperovitch, who once worked for McAfee and is now the co-founder and CTO of the cyber security firm CrowdStrike, compiled a list for CNBC.com.

Email Social Engineering/Spear Phishing

How to fix Microsoft.

Microsoft recently revamped their corporate logo for the first time in 25 years.

There's nothing broken about being the fourth-most valuable company in the world, which is exactly what Microsoft is today. That same company, however, is valued at half what it was 10 years ago. It's not exactly thriving, either.

New computers installed with pre-infected viruses.

Cybercriminals have opened a new front in their battle to infect computers with malware - PC production lines.

Shortest-ever laser pulses produced.

The quest for the shortest pulse has been ongoing since the laser's invention 

Researchers in the US have produced the shortest-ever laser pulses: just 67 billionths of a billionth of a second.

Microsoft unveiled new logo.

Microsoft's new logo is seen in a handout photo. Microsoft Corp unveiled
its first new logo in 25 years on Thursday as it looks to unify its branding
ahead of a clutch of new product releases this year.

Microsoft Corp unveiled its first new logo in 25 years on Thursday as it looks to unify its branding ahead of a clutch of new product releases this year.

Keylogging.

A logfile from a software-based keylogger.

Keystroke logging (often called keylogging) is the action of tracking (or logging) the keys struck on a keyboard, typically in a covert manner so that the person using the keyboard is unaware that their actions are being monitored.

How to protect your cloud data from hacks.

Cloud data storage is becoming more popular, but it's not without risk

The cloud sounds amazing.

Set up your entire digital life to sync automatically with a server run by some big (ostensibly responsible) tech company, and you never have to worry about losing data again, right?

Charge your iPads with the Power of the Sun.

iPads and other tablets have revolutionized the world of portable computing, but it’s a real drag when your device runs out of juice halfway through your novel or while browsing the net. To solve the problem Voltaic Systems has designed a super cool carrier called

How you can avoid being the next online victim.

Mat Honan, the technology reporter who was digitally disemboweled this past weekend, has revealed exactly how he was so spectacularly owned. His case, a cascade of security failures that involved four well-known companies, should be a warning to anyone overly reliant on cloud-computing services.

How to choose who can see you in Facebook’s chat sidebar.

Don’t want a certain Facebook friend to see you’re online? Sure, you could switch the entire Facebook chat sidebar into “offline” mode, but then you’d be invisible to all your friends.

Google launches Nexus 7 tablet.

Nexus 7.

Google took the wraps off the first device to run Android 4.1, Jelly Bean: a 7-inch tablet made by Asus, called the Nexus 7.

How to build hydroelectric power at home.

A diagram of the Kelvin water dropper.

The Kelvin water dropper, invented by Lord Kelvin (1867), is a type of electrostatic generator. Kelvin referred to the device as his water-dropping condenser. The device uses falling water drops to generate voltage differences by

Microsoft "Surface"

With its new Surface Tablet, Microsoft didn’t just break the mold. It smashed it into a million little pieces, chucked them all into the furnace and set the temperature to obliterate. There really is no precedent for what Microsoft did this week.

World's first wireless telephone.

A Photophone receiver and headset, one half of Bell and Tainter's
optical telecommunication system of 1880

The Photophone, also known as a radiophone, was invented jointly by Alexander Graham Bell and his then-assistant Charles Sumner Tainter on February 19, 1880, at Bell's 1325 'L' Street laboratory in Washington, D.C. Both were later to become full associates in

Scientists generate electricity using viruses.

The virus-based electrode produced a small current - enough to flash "1"
on a liquid-crystal display 

Scientists in the US have developed a way to generate electricity using viruses.

The researchers built a generator with a postage stamp-sized electrode and based on a small film of specially engineered viruses.

Hands-free Cars Licensed in Nevada.

Handout photo courtesy of the Nevada Department of
Motor Vehicles shows a Google self-driven car in
 Las Vegas, May 1, 2012.

Nevada‘s putting a new spin on the idea of “hands-free” driving this week: The state just issued Google its first license for a car that drives itself. According to the Las Vegas Sun, Nevadans can expect to see the ballyhooed driverless vehicles being

Hard disk drives undeleted data.

The ICO said two of the purchased hard drives had
enough information to steal someone's identity 

One-in-10 second-hand hard drives still contain the original user's personal information, suggests an investigation by the UK's Information Commissioner's Office (ICO).

The quick brown fox jumps over the lazy dog.

The phrase shown in metal moveable type, used in printing presses.
(Image is mirrored for readability.)

"The quick brown fox jumps over the lazy dog" is an English-language pangram, that is, a phrase that contains all of the letters of the alphabet. It has been used to test typewriters and computer keyboards, and in other applications involving all of the letters in the English alphabet. Owing to its shortness and coherence, it has become widely known and is often used in visual arts.

James Cameron: World's first 11-km diver.

"Titanic" film director James Cameron 

Film Director James Cameron has returned from the Mariana Trench in the western Pacific Ocean, the deepest point on Earth. He made the 11-km descent alone in a specially made mini-submarine. The director of Avatar and Titanic spent six hours filming his underwater exploration for a documentary programme he intends to release.

Einstein's relativity theory is right.

Four different neutrino experiments are at work in the massive
underground laboratory at Gran Sasso 

An experiment to repeat a test of the speed of subatomic particles known as neutrinos has found that they do not travel faster than light.

iPhone "Patent Wars"

So-called 'patent wars' are raging between large technology firms like Apple, Motorola Mobility and Samsung, as they vie for market share in the burgeoning smartphone and tablet market.

Perpetual motion

October 1920 issue of Popular Science magazine,
on perpetual motion. Although considered impossible
 by scientists, perpetual motion continues to capture
 the imagination of inventors. The device shown is
 a "mass leverage" device, where the spherical weights
 on our right have more leverage than those on the left,
supposedly creating a perpetual rotation, but there
 are a greater number of weights to our
left, balancing the device.

Perpetual motion describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not.

Apple Lisa

Apple Lisa, with an Apple ProFile external hard disk sitting atop it.
Note the dual 5.25-inch "Twiggy" floppy drives.

The Apple Lisa was a personal computer designed by Apple Computer, Inc. (now Apple, Inc.) during the early 1980s.

The Lisa project was started at Apple in 1978 and evolved into a project to design a powerful personal computer with a graphical user interface (GUI) that would be targeted toward business customers.

Aircraft Ejection Seats.

United States Air Force F-15 Eagle ejection seat test using a mannequin

In aircraft, an ejection seat is a system designed to rescue the pilot or other crew of an aircraft (usually military) in an emergency. In most designs, the seat is propelled out of the aircraft by an explosive charge or rocket motor, carrying the pilot with it.

Fresnel lens

Lighthouse Fresnel lens, on display at the Musée national de la Marine

A Fresnel lens (pronounced /freɪˈnɛl/ fray-NELL) is a type of lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.

The design enables the construction of lenses of large aperture and short focal length without the mass and

What Is HTML5?

HTML5: Everyone’s using it, nobody knows what it is. I realize that sounds more like a line out of an existential movie — maybe Waiting for Godot or a screenplay by Sartre — than a statement about HTML5. But it’s really the truth: most of the people using HTML5 are treating it as HTML4+, or