Uncategorized
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Letters
Early puberty’s cause Regarding “Early Arrival” (SN: 12/1/12, p. 26): In 1960 I left the Ohio Valley of grass- and corn-fed cows to teach in the Los Angeles area. When I arrived, I found that eighth- and ninth-grade girls looked physically like 25-year-old women in Ohio. I asked the other teachers what was going on. […]
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The Scientists: An Epic of Discovery by Andrew Robinson, ed.
Short biographies of scientists through the ages, from Copernicus to Watson and Crick, illustrate where new ideas and discoveries come from.
