LED Lamp Could Be Powered By Your Tears

The wilderness got you crying in your tent? No problem! This month, a Japanese company is coming out with an LED lantern that runs on saltwater.

With the catchy name "GH-LED10WBW," this portable light runs with as little as 350 milliliters of saline -- roughly a cup and a half, according to Tech-On writers Masaru Yoshida and Nikkei Monozukuri. OK, granted, that's an insane amount of crying, but a few drips could keep the light on slightly longer.

The light works because saltwater acts like an electrolyte between magnesium and carbon rods inside the device, producing electricity, Gizmodo's Andrew Liszewski explained. The salty setup will be good for eight hours before requiring more saline. It could also hook into a USB cable and power small devices.

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