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JULYWhere does radiation come from? Radiation is not new. Although it was discovered and named as recently as 1896, we and our ancestors have lived with it since the beginning of time. The earth is naturally
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Document Date: 2015-07-22 09:03:21
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JULYWhere does radiation come from? Radiation is not new. Although it was discovered and named as recently as 1896, we and our ancestors have lived with it since the beginning of time. The earth is naturally