Search Results for: assessments
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3,586 results
3,586 results for: assessments
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Letters
A climate tipping point In Janet Raloff’s article “Forest invades tundra” (SN: 7/5/08, p. 26), there seems to be a paradox. Raloff says that the albedo from normal snow coverage of the tundra “helps maintain the region’s chilly temperatures,” implying that the coverage also preserves the mats of plant matter. A little later in the […]
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Science Future for April 24, 2010
May 9 – 14 The 2010 Intel International Science and Engineering Fair is held in San Jose, Calif. See www.societyforscience.org/isef June 3 – 4 Researchers meet in Chicago to discuss social factors affecting mental health. See www.adler.edu/news/events June 14 – 17 Mathematicians meet in Austin, Texas, to assess progress in discrete mathematics. See www.siam.org/meetings/dm10
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Letters
A placebo’s true nature There is a serious misconception put forth in the letter from William Davis (Feedback, SN: 5/22/10, p. 31). The placebos used for placebo-controlled, double-blind studies of pharmaceuticals are not “sugar pills.” These placebos are made from the same inactive ingredients in the same proportions used to make the dosage form containing […]
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- Animals
Looks Matter: If swallows aren’t spiffy, mates’ fidelity is iffy
If a male barn swallow's plumage is more attractive than that of other males, his mate is less likely to have furtive flings with other wooers.
- Health & Medicine
Give It Up: Cutting back helps, but even a cigarette or two a day carries risks
Reducing tobacco use curbs the risk of lung cancer, but smoking even a few cigarettes a day puts a person at three to five times the risk faced by a nonsmoker.
- Health & Medicine
High testosterone linked to prostate cancer risk
Men with naturally high testosterone levels face an elevated risk of prostate cancer, suggesting that men who use hormone supplements to combat age-related problems could also be in trouble.
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Macho Makeover: Fish rapidly ascend social ladder
Some male fish can upgrade their social status, and their appearance, in a matter of minutes.
