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Do you know what the Greek goddess, Persephone, has to do with the seasons and the underworld?
Earth and Space Science Concept of the Day
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Magnetic polarity reversal
xMagnetic polarity reversal : A magnetic polarity reversal is a change of the earth's magnetic field to the opposite polarity. This has occurred at irregular intervals during geologic time.
Researchers working in South Africa have discovered two remarkably well-preserved fossil skeletons of an ancient human ancestor dating to almost two million years ago. The discovery is described in two...Read more