Not long ago, a chat over a few beers about the effects of the Earth’s
magnetic field on animals got a group of Czech zoologists thinking. Turning
to Google satellite pictures for answers, they saw something that had gone
unnoticed throughout thousands of years of animal husbandry, that herds of
large mammals align themselves north-south when grazing – wind and
terrain permitting. Now Dr. Hynek Burda, one of those involved in the
earlier finding, has made the news once again by discovering that
electrical power lines disrupt this instinct.