Board Thread:Questions and Answers/@comment-34954086-20120922085545/@comment-4928331-20121006030612

I'm still trying to wrap my head around your Red Volcano answer - I'm not quite sure you actually provided a direct answer :P

One thing I kept thinking is heat can kill magnets. As you know (and will be able to explain far better than me), a magnet works by aligning the molecules of the magnetic material in such a way that it generates a magnetic field. Heating up that material will transfer energy to the molecules, and cause them to vibrate excessively. Ultimately it be too chaotic to maintain the lattice needed for magnetism.