Ship logs and pottery show how the geomagnetic field has changed.

While sailors plied the Seven Seas in the seventeenth and eighteenth centuries, little did they know that their ships’ logs would one day help scientists to reconstruct the history of the Earth’s magnetic field.

Read the story here.

Ship logs and pottery show how the geomagnetic field has changed.

While sailors plied the Seven Seas in the seventeenth and eighteenth centuries, little did they know that their ships’ logs would one day help scientists to reconstruct the history of the Earth’s magnetic field.

Read the story here.