Turns out you can make something pretty cool when you pour boiling, liquid metal on top of an anthill. Harsh for the ants, yes, but according to Anthill Art, these insects are "harmful to the environment and their nests are exterminated by the millions in the United States using poisons, gasoline and fire, boiling water, and very rarely molten aluminum."
For the past ten years or so, I've made it a habit to carry a tiny penlight in my pocket whenever I travel. I wouldn't consider myself a hardcore flashlight enthusiast, but when I was younger I used to collect flashlights of different shapes, sizes and output colors. I still have them, lying somewhere in the house, ready for action in case of a zombie apocalypse. If you're looking for a small flashlight with enough light output to find objects in the dark but would rather not keep supplying it with batteries, you might be interested in Lumen. It doesn't need any external energy source except your body heat. Ross Zhuravskiy is using Kickstarter to raise funding for his creation, and with 26 days until his initiative closes, he officially surpassed his initial $5,000 goal thanks to 477 backers. So how does it work? "Lumen has relatively simple work principle - you touch TEG (Thermoelectric Generator) - small ceramic bar that can produce electric current when ...
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