News: Brain Hacking and Thought-Controlled Quadcopters: The Good and Bad Future of Mind-Reading Devices

Until recently, brainwave-reading devices have pretty much only existed in science fiction. Sure, electroencephalography (EEG), the technology that powers these devices, has been used in medicine and psychiatry since the late 1800s, but diagnosing people's brains and reading their minds are two totally different things. The first EEG headsets available to the public were used mostly in gaming and even in fashion, but in the last few years, they've gotten a little more sophisticated.

News: This Giant Glass Globe Turns Moon and Sunlight into Power—Possibly Even Solar Death Rays!

André Broessel of rawlemon has developed a solar energy generator that can use both sun and moonlight to create usable power. Oh... and it's gorgeous. The device is essentially a huge glass sphere filled with water that uses a ball lens to refract light in a way that increases energy efficiency by 35 percent. It's completely weatherproof and has an optical tracking device, meaning that it can be incorporated into architecture. Here's a concept design of how it could be used to power buildings...

News: Freaking DIY Magma! Syracuse University Creates Recyclable Red-Hot Lava Flows

Believe it or not, it's possible to make your very own lava—if you have a furnace capable of heating up to 1,200 degrees Celsius, that is. Bob Wysocki and Jeff Karson started the Syracuse University Lava Project to study basaltic lava and give students a hands-on way (hypothetically, of course) to learn about it. Oh, and they also want to use it for art projects. Sign me up for that class! It all starts with 1.1 billion-year-old basalt gravel, which apparently anyone can buy. They put the gra...

News: Potassium Chlorate—How Pyromaniacal Mad Scientists Take Care of Cockroaches and Pesky Gummy Bears

Pyromania is definitely nothing new on WonderHowTo. From flamethrowers and hydrogen fireballs, to flame-making pistons and wine corks, to simply burning steel wool fireworks and DIY smoke mix, we've covered it all. But when pyromaniacal mad scientists feel the need to release some tension in the lab, gummy bears and cockroaches become the victims of euphoric oxidation by way of molten potassium chlorate. A recent video by famous YouTube chemist NurdRage shows one of mankind's most despised cr...

News: Solar Bag Lets You Fashionably Purify Water On-the-Go Using UV Rays

Water purifiers are already portable, but not as portable as this crazy invention. Created by Marcus Triest and Ryan Lynch, the Solar Bag can be worn like a shoulder bag and holds up to 2.5 gallons of water. In a feat of ingenuity, the bag is designed to use sunlight to purify the stored water, allowing you to filter drinking water on the go. The bag is made from two layers of polyethylene—a clear, high-clarity layer on the outside and a black layer on the inside. The top layer allows the max...

News: This Real-Life, Working WALL-E Robot Is Absolutely Perfect (And Built Entirely from Scratch)

Want to build your own life-sized, working replica of WALL-E? Be prepared to take on a second job! Mike Senna spent two years perfecting his own version, working 25 hours a week and totaling somewhere around 3,800 hours for the whole project. He had no blueprints to go by, so he spent a lot of time watching the movie over and over to get everything just right. The video below shows some of the construction; skip to about the one minute mark to see WALL-E in action.

News: This 1974 Gas-Guzzling Beetle Is Now an Eco-Friendly Electric "Voltswagon"

Want an electric car without the price tag? You could always build your own, or maybe just hack your old gas guzzler into an eco-friendly electric machine... This weekend at Defcon, security consultant David Brown showed off his "Voltswagon" project, a 1974 Beetle named Shocky that he converted to electric for only $6,000. He removed the old combustion engine, radiator, and a few other unneeded parts to make it lighter. Then he loaded it with batteries front and back, ten Interstate DC-29, 12...

A New Breed of Invertebrate: Half-Rat, Half-Silicone Cyborg Jellyfish

A team of scientists might have just put Jellyfish Art out of business with their new cyborg jellyfish. By arranging the heart cells of a normal rat on a piece of silicone, they've successfully created their own Franken-jellies. When in salt water with a fluctuating electrical field, the rat's heart muscles on the rubbery silicone contract the lobes downward and back up, which mimics the pulsing movement of a young moon jellyfish swimming.

News: This Levitating Light Bulb Defies Gravity (And Ditches Unsightly Power Cords)

Helping to prove that science is way awesome, an 18-year old electrical engineering student has successfully made a light bulb float. His name is Chris Rieger, and he's been working on his "LevLight" project for about six months now, with pretty amazing results. This feat of ingenuity was accomplished by using magnetic levitation, although that over-simplification masks how considerably difficult this undertaking was.

News: Winners of Mad Science's Sugru Contest

Thanks to everyone who submitted ideas in last month's Mad Science contest. The question called for your best idea for using Sugru, a temporarily malleable silicone modeling clay that self cures for a soft-touch permanent bond. It's a marvelous product for at-home quick fixes and for even making some cool DIY bumpers and grips for your electronics. William scoured through all of the comments and chose the two winners he felt best deserved a pack of Sugru.

Contest: Potassium Nitrate Crystals

Recreating one of Will's mad science experiments, I made some potassium nitrate crystals. This was definitely the most fun part of my DIY smoke mix. I can't win the contest, but I'm just putting it up here for fun, since I liked the pictures so much.

News: Discover the Hidden Micro-Monsters in Your Neighborhood Creeks and Ponds

There is a secret world hidden just beneath the surface of every pond, lake, and stream. Those waters are filled with wails of hideous creates murdering other hideous creatures for food and sport. Beautiful animals like dragonflies and damselflies that you see in the light of day start their lives in this sparse spartan hellscape. Luckily, being giant mammals, we can pluck these creatures from the depths and look at all of their cool behaviors! All you need is a pond, net, and curiosity.

Contest: Spud Gun

Well here it is, this is an older pic but it still works, the only change from this pic and the current cannon is that I have put some duct tape around the PVC bonds and am planing on spray painting it. The compression chamber is over a foot and a half long at 2" diameter PVC to push the spud or what ever you can out the cannon. The barrel is a little more than a foot long. This was originaly a prototype with all 1" PVC pipe but I cut it all off and attached a few PVC sizers and made the barr...

News: A Theory of Holographic Music Synthesis

Are you ready for crazy, next-level music technology? I just completed a pretty fun introductory write-up on my new instrument called the Dub Cadet over at instructables.com. This is the first installment of a 3-Part series to explain how to build your own Dub Cadet or personally amalgamated hybrid.

News: Pure Silicone Casting

For those of you who enjoyed the oogoo tutorial we did, this tutorial from instructables shows you how to make molds from 100% silicone gel for casting resin! I wonder if you could also cast other silicone shapes using a silicone mold...

News: Make Insulating Glass Conductive with a Blowtorch!

Have a few light bulbs and a blowtorch? Then join the folks over at Harvard in a cool science experiment on the conductivity of glass. As you well know, glass is an insulator with low conductivity and high resistivity. In the video below, they flip the switch, demonstrating how heating the glass fuse enclosure from an incandescent light bulb can create a conductive material that completes the series circuit and lights the second light bulb. In the video, the two light sockets are wired in ser...

News: Medical Intestinal Camera Teardown

Mike received a tiny medical pill-camera from a relative who had recently undergone treatment. The most surprising part apart from the utter grossness is that the camera transmits electrical signals straight through the human body to skin electrodes with no radio at all! Check out the video to see the camera and Mike's impressive mastery of the oscilloscope.

News: Explosive Polymerization Is Basically Magic

This video is by Adrian McLaughlin, aka plasticraincoat1 on YouTube, who shows us one of the most magnificent examples of explosive polymerization ever. In the video, what appears to be about 1/2 tsp of p-nitroaniline (which is short for para-nitroaniline, which is also referred to as 4-nitroaniline) is treated with a few drops of concentrated sulfuric acid, in a ceramic dish, over a Bunsen burner flame.

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