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  1. Math

    Small Infinity, Big Infinity

    A mathematician develops a new proof showing that infinity comes in different sizes.

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  2. Humans

    Letters from the January 12, 2008, issue of Science News

    Shades of meaning In “Going Coastal: Sea cave yields ancient signs of modern behavior” (SN: 10/20/07, p. 243), researcher Curtis Marean refers to Stone Age people using a reddish pigment for “body coloring or other symbolic acts.” What reason is there for jumping to this conclusion? As with cave painting and figurines, there seems to […]

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  3. Tech

    Energy forest

    Silicon nanowires can at least double the storage capacity of lithium-ion batteries.

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  4. Health & Medicine

    Down syndrome’s anti-tumor effect

    The chromosomal abnormality that causes Down syndrome might protect against some solid tumors.