Earth’s magnetic field is generated by the movement of molten iron in the outer core, so examining the magnetic field can reveal details of the behaviour of the core that underpins it.

The iron jet is moving at about 50 km per year ... a trio of three spacecraft were launched in 2013 to circle and map the Earth's magnetic field in 4 dimensions. Scientists are now able to ...

Sharks are sensitive to magnetic fields, so encountering strong ... "They have large mesh designed to trap and suffocate marine animals" when their gills become caught, Andreotti said.

The ability of birds to use the magnetic field of the earth to navigate has puzzled scientists for decades Credit: Photo: Alamy Scientists have found tiny clumps of iron inside neurons in the ears ...