Scientists at NASA are gearing up to observe the sun as the magnetic fields of its poles begin to switch.
This looks like the premise for a horror movie.
When it comes to creating a picture of the Earth's magnetic history, scientists have pretty good data on the strength and direction of magnetic fields in the Northern Hemisphere, thanks to the study of ancient pottery. But, for researchers looking to make a truly complete model, the problem has been the gaps in information in the southwest Pacific.
Magnetic fields are all around us, but they're usually invisible. Not when British filmmakers Ruth Jarman and Joe Gerhardt get a hold of them. Their film group, called Semiconductor, created "Magnetic Movie," where they've turned audio recordings of magnetic...