As the time line at right shows, hundreds of times in our planet's history the polarity of the magnetic shield ensheathing the globe has gone from "normal," our current orientation to the north ...

using a gigantic magnet, can line up the protons -- or nuclei of hydrogen atoms -- in an object (or organism) to align with the north-south polarity of the magnet. A computer "reads" this to ...

Researchers from the Department of Physics have managed to experimentally develop a new magnetic state: a magneto-ionic ...