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  1. Health & Medicine

    Helping Hands: Brief rehab method aids arm activity after stroke

    Stroke survivors who have difficulty using an arm or a hand experience lasting mobility gains after completing an unusual 2-week rehabilitation program.

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  2. Astronomy

    A Swarm of Umbrellas vs. Global Warming: Astronomer thinks small to save Earth

    A trillion miniature spacecraft could provide a giant sunshade for Earth, significantly reducing global warming.

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  3. 19752

    One solution to global warming suggested in the article is stretching Mylar across the ground. How about designing reflective concrete to aid in this endeavor? We are already covering a large amount of Earth with pavement. Tom E.