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  1. Planetary Science

    Dusty rejuvenation

    The Mars rover Spirit recently had its dirty solar arrays cleaned off, possibly by a dust devil, allowing the craft to generate nearly as much energy as it did when it first landed on the Red Planet in January 2004.

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  2. Humans

    Letters from the April 9, 2005, issue of Science News

    Big ideas Your article “Life on the Scales” (SN: 2/12/05, p. 106) reminded me that taking a bird’s song and transposing it down four octaves makes it sound like a whale’s song. The opposite is also true. To hear this, go to http://www.mind.net/music/birdwhaleDemo.mp3. Todd BartonAshland, Ore. The article would imply that the only anomaly to […]

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  3. 19538

    Your article gives a simplistic and generally inaccurate account of the relationship between Fst [also called Wright’s F statistic] and race/subspecies/species.