LED lantern powered by water and salt, perfect for the crying camper

Water and salt powered LED lantern by Green House Co.Remember those experiments you might have conducted in a high school science class where you attempt to light a bulb by sticking copper wires into a potato or lemon? This reaction is possible because the ions inside these fruits and vegetables help conduct voltage. The developers behind Green House Co., a Japanese gadgets company, has taken this notion to a more real-life level with its latest LED lantern that’s powered by just water and salt.

With no fancy name, the “GH-LED10WBW” does not require batteries or a dry cell. Users can simply fill it up with water and salt and the bulbs will light up upon sensing those ingredients. Green House recommends a ratio of 350 ml of saline water with at least 16 grams of salt — a combination that can last the lantern eight hours of glow before needing a refill.

The technology is possible by the electrolytes readily available inside lantern which contains a magnesium and carbon rod, each of which act as a negative and positive electrode, respectively. The resulting chemical reaction allows for a 55-lumen brightness, and the rods can both be used for 120 hours before requiring a replacement. The lantern also has a USB slot, allowing you to even charge some gadgets using the saline water concoction.

Because the LED lantern doesn’t need batteries, we can assume the device is relatively lightweight, and would make a great gear for campers and hikers. Of course, if you have a crybaby in your group, you can always experiment and see if tears are powerful enough to light up a whole gadget. When life hands you lemons, am I right?

Pricing information on the Green House Co. LED lantern is currently unavailable, but the item is reportedly scheduled for a release later this month.

Emerging Tech

Awesome Tech You Can’t Buy Yet: Grow veggies indoors and shower more efficiently

Check out our roundup of the best new crowdfunding projects and product announcements that hit the web this week. You may not be able to buy this stuff yet, but it sure is fun to gawk!
Movies & TV

The best shows on Netflix, from 'Haunting of Hill House’ to ‘Norsemen’

Looking for a new show to binge? Lucky for you, we've curated a list of the best shows on Netflix, whether you're a fan of outlandish anime, dramatic period pieces, or shows that leave you questioning what lies beyond.
Wearables

Focals succeed where Google Glass fumbled (but do we really need smartglasses?)

It’s been seven years since Google took the wraps off Google Glass. Now, we’re finally getting a modern-day equivalent we want to wear. North’s Focals combine subtle style with an intuitive interface to craft smartglasses you’ll…
Wearables

To be blunt, the Vuzix Blade smartglasses just don’t cut it

We tried out the Vuzix Blade to find out if it’s worth shelling out $1,000 for smartglasses. Are these augmented reality, Android-powered glasses really ready for primetime or just an expensive gimmick that no one really needs?
Emerging Tech

Wish you could fly? You totally can with these top-of-the-line drones

In just the past few years, drones have transformed from a geeky hobbyist affair to a full-on cultural phenomenon. Here's a no-nonsense rundown of the best drones you can buy right now, no matter what kind of flying you plan to do.
Emerging Tech

Here’s how Facebook taught its Portal A.I. to think like a Hollywood filmmaker

When Facebook introduced its Portal screen-enhanced smart speakers, it wanted to find a way to make video chat as intimate as sitting down for a conversation with a friend. Here's how it did it.
Emerging Tech

NASA’s space observatory will map the sky with unprecedented detail

NASA is preparing to launch a cutting-edge space observatory to create the most detailed map ever produced of the sky. Doing so will involve surveying hundreds of millions of galaxies. Here's how it plans to do it.
Smart Home

No strings attached: This levitating lamp uses science to defy gravity

Now on Kickstarter, the Levia lamp is a cool industrial-looking lamp which boasts a levitating bulb. Looking for a table light that will dazzle visitors? You've come to the right place.
Emerging Tech

The Great White Shark’s genome has been decoded, and it could help us end cancer

In a significant step for marine and genetic science, researchers have decoded the genome of the great white shark. The genetic code revealed a wealth of insight into what makes these creatures so successful from an evolutionary standpoint.
Emerging Tech

‘Guerrilla rainstorm’ warning system aims to prevent soakings, or worse

Japanese researchers have created a "guerrilla rainstorm" early-warning system aimed at preventing severe soakings, or worse. The team hopes to launch the system before the 2020 Tokyo Olympics.
Mobile

Barbie’s Corvette ain’t got nothing on Sphero’s fully programmable robot car

Sphero is known for devices like the Sphero Bolt and BB-8 Star Wars toy, but now the company is back with another addition to its lineup -- the Sphero RVR. The RVR is a fully programmable robot car that can be expanding with different…
Emerging Tech

Japanese spacecraft will collect a sample from asteroid Ryugu by shooting at it

The Japanese spacecraft Hayabusa 2 will soon touch down on the asteroid Ryugu, where it will collect a sample by shooting a bullet into the soil. The sample will be returned to Earth in 2020 to learn about the formation of asteroids.
Emerging Tech

Hong Kong’s vision for a smart prison is a full-blown Orwellian nightmare

Hong Kong wants to bring prisons up to date by introducing new location-tracking wristbands for inmates, and a robot arm whose job is to comb through poop on the lookout for contraband.
Emerging Tech

No faking! Doctors can now objectively measure how much pain you’re in

Researchers at Indiana University School of Medicine have discovered the blood biomarkers that can objectively reveal just how much pain a patient is in. Here's why that's so important.