bubblewrap
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MIT Channels MacGyver: Boils Water Using A Sponge, Bubble Wrap And Sunlight
Boiling water is one of the easiest and most reliable ways to get rid of dangerous parasites and bacteria, and thanks to MIT, the next time you go camping you might be able to leave the stove and matches at home. All you’ll need is a sponge, some unpopped bubble wrap and some sunlight.