"Constrained Ball" pen attachment helps you draw straight lines.
Bird-look iPhone speaker: take flight to a new dimension in sound
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Some inadvertent deaths are unavoidable—wrong place, wrong time. But most aren't. Staying alive requires perceiving threat, feeling dread, and responding. Here's some tips you should know to stay alive in some dangerous situations.
How To Build An Emergency Gas Mask - You can buy top notch military grade gas masks from the Internet, hardware stores and from military surplus outlets but what if you needed one quickly and in an emergency? See how to build your own right here!