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August 14, 2016

water purification. Illustration: shutterstock

The common methods of water purification

A painting depicting Herod. From Wikipedia

Olympic games and Jews in the ancient era

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Roach. From Wikipedia

Cockroaches - from all my educational teachers (not for the faint of heart)

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Burn from boiling water. From Wikipedia

Researchers from Tel Aviv and Harvard universities have developed a new technology that may prevent scarring from burns

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