Until the arrival of GPS, the magnetic compass was the single most useful navigational tool available to humans. But it’s a recent invention. Although Chinese explorers understood the principles of ...

Check your compass again — Earth’s north magnetic pole is moving toward Siberia. Since at least the early 19th century, Earth’s north magnetic pole has been situated in the Canadian Arctic ...

This map and an internal magnetic ‘compass’ rely on distinct mechanisms, implying that turtles have two magnetic senses. We developed a magnetic-coil system that could replicate the magnetic ...