Can You Actually Drink Too Much Water?

We've all heard horror stories of water intoxication, where it's claimed people drink too much water and, ultimately, die. But is it really true?

Short answer: yes. But watch this ASAP Science video to find out that, in reality, it is actually very unlikely that you'll ever have to worry about it.

Scientists Turn Off Pain Using Nothing But Light

Pain is a hard problem. Sure, we can throw a little morphine at pain in the short term, but researchers continue to struggle with solutions for chronic pain. New research from Stanford's futuristic Bio-X lab looks like a light at the end of the tunnel—literally!

Put simply, a team of scientists has developed a way to turn pain on and off using light. They used a technique known as optogenetics to insert light-sensitive proteins called opsins into the nerves of lab mice. After a couple of weeks, the nerves became light-sensitive. One color of light would increase the sensation of pain; another would decrease it. This bears huge implications in a number of fields, from neuroscience to psychology, and could help millions of people who suffer from chronic pain.

So that's pretty awesome. What's even more impressive is the fact that researchers made the discovery by accident. Optogenetics is a burgeoning field pioneered by Karl Deisseroth who was a co-author of a study about the new technique published this week in Nature Biotechnology. It enables scientists to control nerves using just light. Scott Delp, whose lab made the discovery, was exploring the use of optogenetics to control muscle movement when he found that the opsins were also affecting the nerves that controlled pain. "We thought 'wow, we're getting pain neurons, that could be really important,'" Delp said in a statement.

The excitement offered by optogenetics don't stop at pain relief, of course. Just a few months ago, scientists also figured out how to control hunger using opsins and light therapy. Experts say the field could impact everything from brain disease to alcoholism. And they make it look so easy. More here.

This Perfectly Counterbalanced Supervillain Table Will Never Fall Over

When decorating their over-the-top headquarters, supervillains need to choose bold office furniture that matches their even bolder schemes to take over the world. And designer Toni Grilo delivers with this gravity-defying coffee table, which looks like it's perpetually on the verge of falling over.

But like any great supervillain, the Lithos Table is actually really hard to topple. Made from pieces of black-veined aziza marble, the table looks like it's one large piece of stone, but on the inside it's engineered to be light and incredibly stable thanks to a counterbalance system that no one ever sees.

Although pricing details aren't known yet, it's safe to assume that when the Lithos Table is available from Haymann you'll probably need a decent stash of cash to afford it. But with a couple of strategic ransoms and kidnappings, even a regular villain could probably raise enough cash in no time. More here.

Facebook Is Buying Messaging App WhatsApp for $16 Billion

Facebook just entered into an agreement to buy the hugely popular messaging app, which recently passed the milestone of 450 million active monthly users. The cost? $16 billion (more on the price below). Wow.

Wait...How Much?

According to the release, the purchase price is $4 billion in cash, $12 billion in Facebook stock, plus another $3 billion in restricted stock given to the founders and employees, which vests after four years. If you see a $19 billion number floating around out there, that's why. In other words, everyone who works for the company now has a huge incentive to stay on—and it shows that Facebook is interested in the talent that worked on the service, in addition to the platform itself.

What the heck is WhatsApp?

WhatsApp is a cross-platform messaging service that works on iOS, Android, Blackberry,Windows Phone, and yes, even Nokia's dying Symbian OS. It's basically messaging that works over your data connection or Wi-Fi instead of SMS—much like iMessage, except it works for everything. WhatsApp does multimedia, it does group chat, and it's widely used internationally. It's free for the first year, and then just $1 per year after that.

According to the Facebook release, WhatsApp has 450 million active monthly users and is adding one million users per day. That's an impressive clip.

Why Does Facebook Want WhatsApp?

Facebook has been trying to nail down messaging for some time now. There were rumors that Facebook offered Snapchat $3 billion in cash, which only happened after Facebook tried to build its own version of Snapchat. Facebook Messenger is actually a nice product that works over data internationally, much like WhatsApp. Unfortunately, people don't use it, or rather, it's not incorporated into people's lives in the way text messaging is—and that's what Facebook needs. What's more, given Facebook's huge international reach, trying to edge out competitors on that front is a really smart move.

What's Going to Change?

According to a blog post on WhatsApp's website, absolutely nothing. Here's what co-founder Jan Koum had to say on the topic:

WhatsApp will remain autonomous and operate independently. You can continue to enjoy the service for a nominal fee. You can continue to use WhatsApp no matter where in the world you are, or what smartphone you're using. And you can still count on absolutely no ads interrupting your communication. There would have been no partnership between our two companies if we had to compromise on the core principles that will always define our company, our vision and our product.

Do you use WhatsApp?

Pomegranate-Inspired Batteries Hold 10x The Juice

A team of Stanford scientists recently made a breakthrough. After years of trying to create a new generation of lithium-ion batteries that use energy-efficient silicon to hold a charge, they found the secret to the winning design in an unlikely place: pomegranates.

The problem with using silicon in batteries is two-fold. For one, the fragile material swells and breaks during charging. It also tends to react with batteries' electrolytes and gunk up the circuits. But silicon can also store up to ten times as much charge as existing rechargeable lithium-ion batteries.

To avoid the material's downfall, the Stanford scientists drew inspiration from the way that pomegranate seeds come in clusters. They decided to use silicon nanowires that are too small to break and encase them in carbon "yolk shells" that would allow for some swelling. (See diagram to the left.) The yolk shells were then arranged like pomegranate seeds so that they would conduct electricity well without exposing the silicon. The new, pomegranate-inspired geometry works wonderfully.

"While a couple of challenges remain, this design brings us closer to using silicon anodes in smaller, lighter and more powerful batteries for products like cell phones, tablets and electric cars," said Stanford professor Yi Cui in a statement. "Experiments showed our pomegranate-inspired anode operates at 97 percent capacity even after 1,000 cycles of charging and discharging, which puts it well within the desired range for commercial operation."

Can you imagine if your smartphone bettery held ten times the charge it does now? Life would be wonderful! Of course, it'll take some time for this new technology to be implemented, so don't stop carrying around your charger. Yet. More here.

What happens when you reach level 999 of Flappy Bird

Were you expecting anything else? The silliest of silly games is impossible to beat because a familiar friend has gone villain and acts as the final boss. He's sick and tired of letting little Flappy fly around in what is clearly his world. Die bird, die.

The video is obviously but wonderfully doctored by the guys at pipocaVFX but it's pretty perfect. If you're an impatient type, fast forward to around the one minute mark to get right to the end where level 999 starts.

Why Your Mouse Cursor Is Slanted Instead of Straight

Have you ever wondered why your mouse cursor rests ever so slightly to the left? Chances are, that little arrow on an incline is so ubiquitous that you've never even thought twice about its 45-degree lean. As it turns out, there's a very good reason for it. Or was, anyway, back in a more pixelated age.

Over on Stack Exchange, computer software developer Bart Gijssens revealed the following explanation of the slanted cursor's origins in response to this question on its design.

The mouse, and therefore the mouse cursor, was invented by Douglas Englebart, and was initially an arrow pointing up.

When the XEROX PARC machine was built, the cursor changed into a tilted arrow. It was found that, given the low resolution of the screens in those days, drawing a straight line and a line in the 45 degrees angle was easier to do and more recognizable than the straight cursor.

As you can see below, the original, straight cursor was indeed much more difficult to pick out amongst the blocks of basic text.

And as Gijssens points out in a later edit, after Englebart created the left-leaning cursor, Steve Jobs borrowed it for his software followed by Bill Gates who borrowed it after him. At this point, we've just become so accustomed to our leaning (and still highly functional!) arrow that anything else would seem too bizarre. Besides, why mess with perfection? More here.

Draw a Straight Line or a Skyline With These Famous City Rulers

A ruler's traditionally a straightforward thing, but that doesn't mean it has to be boring. These pretty pieces from Monkey Business give you a measuring edge when you need it, and a city skyline stencil when you're feeling playful.

The Skyline Ruler is available in seven cityscapes: London, Paris, NYC, Berlin, Amsterdam, Toronto, and Jerusalem. Each $9 plastic piece has a full 20cm ruler on the bottom edge (yes, even the NYC ruler is in metric).

There's something fun about a well-made stencil, and buying one that's also a ruler feels slightly less superfluous. Is it functional? Sure! Especially if you happen to have the type of job where you need to sketch a highly accurate skyline at a moment's notice. More here.

This Graphene Nanoribbon Conducts Electricity Insanely Fast

You're looking a ribbon of graphene that's just one atom thick and fifteen atoms wide—and it could help shift data thousands of times faster than anything else currently can.

The nanoribbons, produced Felix Fischer, a chere.hemist at Berkeley, are narrow—10,000 of them placed side by side would be about as wide as a human hair—and straight. That means that electrons can travel along them with no atoms to block their way, transporting current thousands of times faster than any other existing conductor—at least, over short distances. In turn, that means transistors can be switched on and off much faster, wildly increasing the speed of circuits.

Interestingly, the ribbons aren't sculpted out of graphene, but rather grown chemically, by heating rings of carbon and hydrogen so they slowly link, forming long daisy chains. Then, they're heated again to shift the hydrogen, leaving long ribbons of carbon-carbon bonds like those in the image above, which was captured using a scanning tunneling microscope. More here.

NASA Sees Mysterious Heart in The Darkness of Space

The Chandra X-Ray Observatory has captured this Heart in the Darkness, for all of you astronomers in love out there, "a heart-shaped cloud of 8 million-degree Celsius gas in the central region of the star cluster NGC 346. NASA says that the "the nature of the heart in the darkness will remain mysterious" until they make future observations.

Here are their theories right now:

Evidence from radio, optical and ultraviolet telescopes suggests that the hot cloud, which is about 100 light years across, is the remnant of a supernova explosion that occurred thousands of years ago.

The progenitor could have been a companion of the massive young star that is responsible for the bright X-ray source at the top center of the image. This young star, HD 5980, one of the most massive known, has been observed to undergo dramatic eruptions during the last decade. An alternative model for the origin of the hot cloud is that eruptions of HD 5980 long ago produced the cloud of hot gas, in a manner similar to the gas cloud observed around the massive star Eta Carinae. Future observations will be needed to decide between the alternatives. Until then, the nature of the heart in the darkness will remain mysterious. More here.

A Tiny New Chip Promises Internet 400 Times Faster Than Google Fiber

IBM researchers in Switzerland just unveiled the prototype for an energy efficient analog-to-digital converter (ADC) that enables connections as fast as 400 gigabits per second. That's 400 times faster than Google Fiber and about 5,000 times faster than the average U.S. connection. That's fast enough to download a two-hour-long, 4K ultra high definition movie in mere seconds. In short, that's incomprehensibly fast.

The ADC chip itself was actually built for loftier purposes than downloading episodes ofPlanet Earth, though. It's actually bound for the Square Kilometer Array in Australia and South Africa to help us peer hundreds of millions of light years into space, hopefully to give us a better idea of what the universe was like around the time of the Big Bang. This massive radio telescope will devour data, too. It's expected to gather over an exabyte every day when it's finished in 2024. That's over 100 billion gigabytes.

Believe it or not, 400 gigabit isn't even the fastest connection the world has seen. For that you'll have to go to the United Kingdom where researchers recently developed 1.4 terabit internet using commercial-grade hardware. That's warp speed. More here.

A Double Chamber Bike Tire Helps Prevent Flats When You Ride Off-Road

Those big chunky tires used on mountain bikes don't just help plow through rough terrain and absorb shocks. When under-inflated, they also have a much larger footprint for extra grip on uneven surfaces—but there's a tradeoff. When an impact compresses the inner tube too far it can cause what's known as snake bite punctures, an all too common problem faced by bikers that a new double-chambered tire might solve.

As the double valves indicate, the new tire—jointly developed by Schwalbe and bike accessory maker Syntace—features a chamber next to the rim which can be pumped up to higher pressures, preventing it from squishing to the point of puncturing. And it sits next to an outer chamber that can be inflated to lower pressures, so it's able to spread out for improved traction and compress better over bumpy terrain.

The tire—which is still being perfected and will hopefully be available later this year—is an improvement to the tubeless design that's often used in off-road wheels. Previous tubeless tires could be inflated to low pressures with less of a risk of impact punctures, but it also increased the chances of the tire popping off the rim. Since the higher-pressure inner chamber hugs the rim with this new design, that shouldn't be a problem. More here.

Hack a 3D Printer Into a Surprisingly Skilled Air Hockey Robot

Good news for anyone who dropped a small fortune on a 3D printer and found themselves bored of creating novelty keychains and meme-based figurines. Jose Julio successfully turned the parts needed to build a RepRap 3D printer into an air hockey-playing robot that looks pretty tough to beat.

If your roommates or family straight-up suck at air hockey and you want a real challenge, Jose has posted detailed build instructions here, as well as 3D models and requisite software here. The usual caveats apply in terms of having some pre-existing level of skill to build your own—this isn't like putting together a Lego kit—but the good news is that you can probably turn it back into a 3D printer to fix or replace whatever it is you smash after continuously losing.

Great, Hackers Can Use Snapchat to DoS Attack Your Phone

When it comes to security, this hasn't been Snapchat's year. First hackers leaked a massive amount of private user data; then we discovered how dumb easy it is to circumvent Snapchat's anti-robot feature. Now, cyber security researchers have shown that Snapchat can be used to launch a denial-of-service attack that freezes your smartphone, according to the L.A. Times.

Security expert Jaime Sanchez showed the L.A. Times how Snapchat's flawed security system allows hackers to reuse encryption tokens to blast individual users with thousands of messages in a matter of seconds. The tidal wave of messages causes iPhones to freeze and restart; Android devices don't fully reboot, but slow down significantly, preventing users from doing anything else through Snapchat until the thousands of messages have been processed.

Reusing identity tokens could allow spammers to send massive amounts of messages to thousands of users, or launch a focused attack on a single user.

When the L.A. Times contacted Snapchat, the app company wasn't aware of the vulnerability. Given Snapchat's slow response to security alerts in the past, maybe that shouldn't be surprising. More here.

Scientists Say They Can Provide Infinite Power by Harnessing Vibrations

Well, this sounds promising. A team from Singapore's Agency for Science, Technology and Research say they can efficiently harvest enough electricity from low frequency vibrations to power small electronic devices.

The process works thanks to aluminum nitrate, one of several materials that naturally accumulates an electric charge in response to mechanical stress. That property is known as piezoelectricity. The idea of using low frequency vibrations to make electricity like this is not a new one, but this is a big step forward. In the past, scientists believed that the bigger the device, the more electricity could be harvested and could also only use one frequency, limiting the amount of electricity that could be produced significantly. The new approach can use a wide range of frequencies and works in tiny devices, like wireless sensors.

But let's not get ahead of ourselves. It's not like we're going to start lighting our homes with ambient sounds. And despite what the scientists say, it's probably not a good idea to think of the low frequency vibrations approach as a way to get infinite electricity because, well, infinity is a long time. If the technology pans out, though, it could be huge in the fields of wireless and medical technology, though. After all, nobody wants batteries in their body. More here.

This Skiing Backpack Turns Parents Into Sled Dogs

Being a parent isn't always a glamorous job—in fact, it rarely is. But you'll do anything for your kids, including serving as a human sled dog when you're out skiing and your spawn are too tired to forge through fresh powder, thanks to the Snowmule backpack.

Available in 15 and 25 liter capacities, the Snowmule packs can be used to carry a set of skis and a set of poles. And at the bottom of the pack are a set of stashable tow ropes with handles that can be used to pull a couple of 100 pound passengers behind you. It's kind of like water skiing—except it's real skiing, and the speeds are far less exhilarating.

But it should help mitigate the "I'm tired can we go home?" complaints, and that alone will make the $115 (15 liter) and $140 (25 liter) price tags completely worth it. More here.

This Incredible Star Wars-Style Bionic Hand Let an Amputee Feel Again

We geeks all have the same platonic prosthesis ideal: Luke Skywalker's badass Star Wars mech-hand. We're getting there, bit by bit. Dennis Aabo Sørensen's new hand is almost there; it let him feel again.

The hand is the subject of an in-depth paper published in the journal Science Translational Medicine today, and has been tested on Sørensen and Sørensen alone. The mecha-gripper works by tapping right into Sørensen's nerves via electrodes in his arm that are stimulated by sensitive pressor sensors on the hand's fingertips. The result? Touch. Touch that Sørensen says feels an awful lot like what he can get out of his good hand.

Silvestro Micera, a neural engineer at the Scuola Superiore Sant'Anna in Italy and the Swiss Federal Institute of Technology Lausanne in Switzerland, lead the team of researchers responsible for the touchy-feely mitt and considers it "certainly a major step in the right direction."

The catch? Since the study focused on a single person, it's hard to really draw any conclusions about how mechanical hands like these could work on a larger scale. Not to mention there's the issue of using it for long periods of time; Sørensen only used this one off and on.

There's still a lot of work to be done, so you probably won't want to go losing any hands any time soon. Or ever. But for folks who already have, it looks like touchy-feely solutions are just around the corner. More here.

What if famous brands used famous cartoon characters as their logos?

Brilliant. Artist Bruce Yan remixes the logos of famous brands by inserting the cartoon characters we grew up with. So the Playboy bunny becomes a profile view of Bugs Bunny, the mermaid in the Starbucks Logo becomes Ariel, Charlie Brown is the BIC guy and so on. The twists are super clever and fun.

You can actually see more of these logo remixes at Gallery1988 where Yan sells them as prints (sadly, a lot of them seem to be sold out). It'd be great if the brands actually struck deals with the cartoons and did a whole series like this in real life. More here.

How To Turn Dry Pasta Into a Rocket Engine

You may not realize it, but your kitchen is one of the most well-stocked chemistry sets you could ever hope for. And it's not only for creating edible chemical reactions. NASA might rely on giant laboratories and factories to build its rocket engines, but all you need is a piece of pasta, a jar, some hydrogen peroxide, and a little yeast. Oh, and fire.

As long as you're not expecting to a put a human into orbit, this simple experiment will produce a surprisingly satisfying rocket engine on a very small scale. Mixing the hydrogen peroxide and yeast produces a steady flow of oxygen, and the pasta works well as makeshift rocket fuel. And while your creation won't produce much thrust, it still produces a decent flame, so be careful with this one, ok?

Can't Choose Between Biking or Roller Blading? Now You Don't Have To

The Segway opened the floodgates for countless personal mobility devices, with designs that range from conservative to downright crazy. And the Aeyo—a cross between a scooter, a bicycle, and a pair of inline skates—falls somewhere in the middle of that scale.

The Aeyo is ridden in a standing position like a scooter, but instead of kicking off the ground or pedaling for propulsion, your feet are strapped into a pair of what look like inline skates, which are attached to the rest of the contraption with a pair of articulated legs. So a simple skating motion gets the Aeyo rolling, while steering and braking come courtesy of its handlebars. More here.