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Children’s Science: Fun with Magnets
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Children’s Science: Fun with Magnets

July 7th, 2016 | by Jane Wortham
Magnets = Fun! In case you’re short on children’s science exercises, get some little magnets from your neighborhood tool shop. They’re modest, simple to get out and tidy up, and give enough variety to fortify...
Nettie Maria Stevens (1861-1912)
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Nettie Maria Stevens (1861-1912)

July 7th, 2016 | by Jane Wortham
On this day, July 7th, we recognize Nettie Maria Stevens. Specialized chromosomes determine gender. Nettie Maria Stevens and Edmund Beecher Wilson both independently developed the idea of sex determination by chromosomes. Their...
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