print email comment close Magnetic Storm URL: http://www.pbs.org/wgbh/nova/magnetic/ Description: This site is a companion to a Public Broadcasting Service (PBS) NOVA program about the magnetic field that protects the Earth from radiation, its current weakening and potential for continuation or reversal, and effects of these changes on animals. The site features essays, images of auroras ("the most visible signs of Earth's magnetic field"), a simulated flip of the Earth's magnetic field, a teacher's guide, and related links. Publisher: WGBH Educational Foundation Extra Keywords migration Library of Congress Subject Headings: Geomagnetic reversals Geomagnetism LII Database Information: Record 12270 created by Sybil Finemel on 11/16/2003 Last modification on 11/17/2003 Published: 11/16/2003   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/12270