Magnetic Field
Long Read: There and back again
21 Oct 2023
By Kate Evans: Humans have been puzzling over the mysteries of animal migration and navigation for centuries. Audio
Hangi stones and magnetism
25 Feb 2016
Hangi or oven stones are a record of the earth's magnetic field at the time they were heated and cooled, and they show a remarkable history of New Zealand's magnetic field for the past 600 years. Audio, Gallery
