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This Week in Science: Reversing Alzheimer's, Solving a Tapestry Mystery, And More!

This week in science: A promising Alzheimer's breakthrough as an experimental drug completely reverses mental decline in mice with advanced disease; a historian may have cracked the mystery of an ancient tapestry; astronomers spot three galaxies in the process of colliding; and much more! Promising New Drug Reverses Mental Decline in Mice With Advanced Alzheimer's [caption id="attachment_187210" align="alignnone" width="642"] (Jolygon/iStock/Getty Images Plus)[/caption] A drug candidate called P7C3-A20 has reversed the mental decline of Alzheimer's disease in promising tests on mouse models.

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