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  1. Health & Medicine

    Could this be the end of the monthly period?

    Two compounds stop menstruation in monkeys, suggesting that similar drugs might someday enable women to bypass monthly bleeding.

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  2. Forest in the Clouds

    See whether BatCam catches a tropical bat visiting a banana, or review QuetzelCam highlights for a murky but impressive view of how such a long-tailed bird jams its plumage into a nestbox. Or, if the cameras aren’t picking up anything in particular, visitors can listen to short recorded commentaries from such denizens as prong-billed barbets […]

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  3. From the August 15, 1931, issue

    ANOTHER TEMPLE TO THE WIND GOD Near the little Indian village of Prairieville–the Mexican name is Calixtlahuaca–archaeologists have made a rare and unusual discovery.