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47% off (Sale price $18.50, Reg. Price $35.00) :: Choose from 10 Options $16.50 for a medicine plant walk for one ($25 value) $34 for a medicine plant walk for two ($50 value) $44.50 for an all-day survival skills intensive course for one ($85 value) $89 for an all-day survival skills intensive course for two ($170 value) $18.50 for a fire-building workshop for one ($35 value) $38.50 for a fire-building workshop for two ($70 value) $18.50 for a bow-making class for one ($35 value) $38.50 for a bow-making class for two ($70 value) $16.50 for a Weapons in Nature weapon-building workshop for one ($25 value) $34 for a Weapons in Nature weapon-building workshop for two ($50 value)The Compass: A Magnetic MarvelAnyone can learn to use a compass to find their way through the woods more reliably—but the science behind it is a little more complicated. Read on to find out why.A familiar tool to any wilderness adventurer, a compass is simply a magnetized needle fixed upon a pivot point that allows it to swivel with minimal friction. The needle aligns with the Earths magnetic field, so labeling one end of it allows you to always know which direction is north—sort of. There are two different points on the globe with equal claim to the name: true north, where the longitude lines on a globe converge and Santas castle sits, and magnetic north, where the compass needle points.The latter point has been drifting westward for as long as humanity has been using compasses to observe it. While theres a lot we dont yet know about the Earths magnetic field, one recent model accounts for this drift by proposing an uneven rate of cooling in the Earths mostly molten iron and nickel core, which would distort the rotation-driven gyres that induce the electric currents making up the geomagnetic field. The difference can set you hundreds of feet off course over a 10-mile hike.Fortunately, most compass models account for this issue. The most basic do so via an adjustable orienting arrow fixed to the compass base. Fresh off the compass vine, it will be aligned with the big N on the dia
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