Although the Earth’s magnetic field is reliable enough for navigation and is also essential for blocking harmful solar emissions and for improving radio communications, it’s not a uniform strength ...

Many migratory birds use Earth’s magnetic field as a compass, but some can also use information from that field to determine more or less where they are on a mental map. Eurasian reed warblers ...

Loggerhead turtles are able to sense the Earth’s magnetic field in two ways, but it wasn’t clear which sense the animals use to detect the magnetic field when navigating using the magnetic map they ...