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  11. A group of researchers was found alive in an abandoned laboratory. They left a

    A group of researchers was found alive in an abandoned laboratory. They left a

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  17. What Russia's tactics in Syria could say about Putin's plan for Ukraine

    What Russia's tactics in Syria could say about Putin's plan for Ukraine

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  18. A refugee from Ukraine set fire to a DNA research center in California

    A refugee from Ukraine set fire to a DNA research center in California

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  19. Using smallpox as a biological weapon

    Using smallpox as a biological weapon

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