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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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The horizontal fraction bar was introduced by the Arabs.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

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