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  1. Double Dog: Researchers produce first cloned canine

    The dogged pursuit of a South Korean research team has produced Snuppy, the world's first cloned canine.

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  2. Humans

    Letters from the August 6, 2005, issue of Science News

    Empty threat? “Empty Nets: Fisheries may be crippling themselves by targeting the big ones” (SN: 6/4/05, p. 360) reads as if there is something to be alarmed about. By selectively catching large fish, we have reduced “the mean size [of food fish to] one-fifth of what it was.” This is not cause for alarm. It […]

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  3. Math

    Playing with Ruth-Aaron Pairs

    Home-run records lead to intriguing prime-number patterns.