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This posting is dedicated to conveying a fact based appreciation for our planet’s protective magnetic “force field” with lectures from:
Geoscientist Jeff Gee - Exploring Extremes of Earth's Magnetic Field
Professor Joanna Haigh - The Sun and Climate
… along with some awesome data driven visualizations, narrative is a bit on the melodramatic side, but hey, that's what folks want:
Earth's Magnetism in HD - Discovery Channel
Magnetism - Defending Our Planet, Defining The Cosmos - NASA Multimedia Science
Origins of the Earth’s magnetic field - CEOAS - Oregon State
Magnetism - Defending Our Planet, Defining The Cosmos