Pump Fire Drill - The Iroquois invented this ingenious pump drill, which uses a flywheel to generate friction. The crossbar and flywheel are made of hardwood; the spindle and fireboard are made from softwoods (as in the ha
[ “Isn’t it easy to create a website?” My IT friend felt angry after I asked this question. Have you ever asked one question that will make engineers get mad? Check here to know more about 8 phases engineers hate the most.
Some inadvertent deaths are unavoidable—wrong place, wrong time. Staying alive requires perceiving threat, feeling dread, and responding. Here's some tips you should know to stay alive in some dangerous situations.