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Guatemala ensures survival of vulnerable 'fossil' fish
科学与环境

Guatemala ensures survival of vulnerable 'fossil' fish

In a freshwater canal surrounded by mangroves in southern Guatemala, hundreds of baby tropical gars—a torpedo-shaped fish with an alligator-like snout dubbed the "fossil fish"—are released into the wild.

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科学与环境

Scientists may have solved a 2,000-year-old Dead Sea Scrolls mystery

Researchers may have solved a long-running mystery surrounding the Dead Sea Scrolls by proposing that the Qumran sect really did use its distinctive 364-day calendar. Its perfectly ordered 52-week system kept holidays on the same weekdays, but it slowly drifted out of sync with t

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