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  1. Horns vs. Sperm: Male beetles on tight equipment budget

    A group of dung beetle species that sprout elaborate horns often face trade-offs between horn and testes sizes.

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  2. Autism’s DNA Trail: Gene variant tied to developmental disorder

    A study of more than 700 families with children diagnosed with autism has identified a gene variant, already known to affect brain formation, that boosts a person's chances of developing this severe disorder.

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  3. 19746

    I am a retired high school mathematics teacher who has quilted mathematical ideas for over 20 years. Currently, I am working on a quilt called Pascal’s Pumpkin. I was totally excited by this article and began to think about quilting some spidrons! Elaine EllisonWest Lafayette, Ind.