Learn what the USGS is doing to understand natural hazards and mitigate their effects on human life and property at the USGS Natural Hazards Web site, which h
Could magnetic reversals be caused by meteorite or cometary impacts? Could reversals be caused by melting of the polar ice caps or some sort of planetary alignment?
One of the most important jobs that a scientist has is to identify -- from among all the possible causes and
Could the mass extinctions observed in the paleontological record be correlated with magnetic reversals?
The magnetic field of the Earth does protect us from fast-moving charged particles streaming from the Sun, and so does the atmosphere.
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