Experts from REI do a great job of explaining the basic parts of a compass and how to use them, but here is the breakdown: Magnetic declination is the angle between magnetic north and true north ...

Research by Bangor University found that these birds, in this case, Eurasian reed warblers (Acrocephalus scirpaceus) use only ...

It is known to those who have devoted attention to thejiip of the magnetic needle ... the inclination .augments, and the declination has its mean value (about ten hours before mid-day); when ...