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How To: It's Not Just Your Camera & Mic — Here's All the Crazy Ways Your Phone Could Be Used to Spy on You

As you're surely aware, your phone can be used against you. Thanks to our cameras and microphones, a clever hacker can obtain access to your device and invade your privacy. But spying isn't limited to just these two sensors — gyroscopes, proximity sensors, QR codes, and even ads can be used to paint a very clear picture about who you are and what you're currently doing.

News: Scientists Turn Bacteria into Mini Cyborg Solar Panels

Plants all around us capture sunlight every day and convert it to energy, making them a model of solar energy production. And while the energy they make may serve the needs of a plant, the process isn't efficient enough to generate power on a larger scale. So, scientists from the University of California found a way to treat bacteria with chemicals that turned them into photosynthesis machines, capable of generating products we can convert into food, fuels, and plastics.

How To: Spot a Heavy Drinker with Eye Contact

Did you know that your face shows others how much alcohol you drink? Whether you've never had a sip of booze with those around you or you're known as the party animal of the group, the genes that shape your appearance also show others just how much you enjoy liquor. Pinpointing the big drinker in any setting is easy to determine: you just need to make eye contact.

How To: The Flashlight That Finally Lets You Adjust LED Brightness on Your Samsung Galaxy Note 2

I know what you're thinking. Why spend time talking about another flashlight application when there are literally thousands of them scattered throughout Google Play? As it turns out, there is a void in the realm of flashlight Android apps. Flashing lights, strobe lights, cop lights, warning lights—they're all available, but the one feature that's missing is adjustable brightness.

How To: Customize LED Alerts for Specific Notifications on Your Samsung Galaxy Note 2 (No Root Required)

While the Samsung Galaxy Note 2 has an integrated LED for notifications, it only works for a few things, like charging and low battery, and it only flashes two main colors (red and blue) when the screen's off. As someone that usually has their phone on silent or vibrate, it's hard to tell when I receive important messages or notifications. Sure, I could set a specific vibration or ringtone for individual apps, but that can quickly get annoying and distracting, especially at work or school.

How To: Create a Light Painting Vortex Using a DIY Reusable Steel Wool Cage

There's no shortage of uses for steel wool, but the majority of them tend to be on the pyromaniacal side, like DIY fireworks. This trick by Mike Mikkelson is no different—it uses a homemade reusable "wool cage" to create a spinning vortex of light, like in the photo below. You can do this with just a piece of steel wool on a cable, but Michael wanted something he could easily reuse no matter how many shots he took, so he built a small cage to house the steel wool out of chicken wire, a small ...

How To: Send Your Secret Spy Messages Wirelessly Through Light with This DIY Laser Audio Transmitter

Looking to transmit some super-secret audio communications to your other spy buddies? A laser is the perfect tool for getting your sounds heard from a small distance—without anyone intercepting them— even if it's just a cover of your favorite pop song. A laser audio transmitter uses light rather than radio waves to transmit sound. This is a much more secure way to send audio communications because the laser is a focused beam of light, whereas radio waves are not controlled, so they can be pic...

How To: Add rays of light through trees in Photoshop

In this video, we learn how to add ray so flight through trees in Photoshop. First, open up Photoshop and open up your picture. Now, go to your channels and choose the one with the most contrast by looking at all of the options. Now, duplicate the layer and go to "image", "adjustments", and then "levels". Now, make the image a lot darker, looking at the image preview as you go. When finished, click "ok", then select this layer and press "control", then click". Go back to the regular image, th...