You are viewing the admin subdomain

Use the following link to publicly share this page:

https://theworld.org/public://migration/PriMigrationsDamanticWordpressAt...

magnet.jpg

magnet.jpg

Eric Stroud displays a magnetized mix of two rare earth metals -- neodymium and praseodymium -- that he has found to be highly effective at repelling sharks. (Photo: Ghinwa Fakhri Choueiter)