Earth's magnetic field, though observed by humans for centuries, has been explained only recently by science. Most of the field is the result of electricity flowing through the molten metal outer core of the Earth as it rotates. The remainder is caused...

Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with one pole near the north pole (see Magnetic North Pole) and the other near the geographic south pole (see Magnetic South Pole). An imaginary line joining the...

The answer to what happened to America's vanishing honeybees is simple, a caller told entomologist May Berenbaum: Bee rapture. They were called away to heaven.No, wait, it's Earth's magnetic field, another caller told the University of Illinois professor.And when Berenbaum went on the Internet, she...

Doctors in the future might be able to diagnose breast and ovarian cancer or Alzheimer's disease using magnetism and microscopic particles of iron oxide bound to the type of cells being traced.A team led by Dr. Richard Larson of the University of New Mexico Cancer...