Dr Meghan Gray chats about magnetic fields and the Earth's changeable poles. More links and info below ↓ ↓ ↓ More Dr Gray videos: http://bit.ly/Meghan_Playlist Deep Sky Videos astronomy videos: https://www.youtube.com/user/DeepSkyVideos Dr Gray at the University of Nottingham: https://www.nottingham.ac.uk/~ppzmeg/ Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Editing and animation by Pete McPartlan Email list: http://eepurl.com/YdjL9