Letters to the Editor
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19581
While no obstetrician nowadays advocates starving expectant mothers, there was a general belief for many years that a pregnant woman should gain minimal weight. It might be of interest to know if this practice had any influence on the incidence of schizophrenia. Nelson MaransSilver Spring, Md.
- Humans
Letters from the August 6, 2005, issue of Science News
Empty threat? “Empty Nets: Fisheries may be crippling themselves by targeting the big ones” (SN: 6/4/05, p. 360) reads as if there is something to be alarmed about. By selectively catching large fish, we have reduced “the mean size [of food fish to] one-fifth of what it was.” This is not cause for alarm. It […]
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19580
This article reports on research indicating that winds above the ocean surface can increase due to an apparent damping of turbulence by particles of ocean spray. I would like to point out that a similar phenomenon has been identified in rivers. In situations where the transport of fine sediment particles (sands, clays) coming from the […]
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19579
Your article was very interesting, but it didn’t mention the possibility of a genetic bottleneck after Homo sapiens was already dispersed into Asia and then eliminated from everywhere but Africa by the Toba volcano in Sumatra 74,000 years ago. It has been said that during the colder times after the explosion, the cold-adapted Homo neanderthalensis […]
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19578
Does the name of Honda’s robot, Asimo, have a meaning in Japanese, or is it just a tip of the hat to Isaac Asimov? Dennis LynchGlenshaw, Pa. Asimo’s name stands for Advanced Step in Innovative Mobility.—N. Moreira
- Humans
Letters from the July 30, 2005, issue of Science News
Led astray The illustration of the solar system in “Roaming Giants: Did migrating planets shape the solar system?” (SN: 5/28/05, p. 340) does not represent the current orbit of the planets. Rather, it must be a frame from the computer simulation referred to in the article. William MeadowsDripping Springs, Texas Indeed, the image reflects the […]
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19577
I’m currently writing a biography of RAF Squadron Leader Roger Bushell, the instigator of the plan to construct the three tunnels in Stalag Luft III. Last fall, I visited the site. Amazingly, it was difficult to see where the excavation team had been. I have also spoken to dozens of men who either helped build […]
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19576
That monkeys get “weirded out” by seeing themselves in mirrors doesn’t seem unexpected. Were a familiar or an unfamiliar same-sex capuchin seen, the test subject would be bombarded not just by visual images but also by smells generated from the normal interactions of monkeys. What makes them act strangely is not seeing themselves, which they […]
- Humans
Letters from the July 23, 2005, issue of Science News
Clearly a problem? “Built for Blurs: Jellyfish have great eyes that can’t focus” (SN: 5/14/05, p. 307) states that “the resulting blurred view is good enough for spotting large objects such as mangrove roots.” It seems to me that the article is missing the crucial biological question presented by these eyes. My understanding is that […]
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19575
I have some problems with this article. The section regarding alpine thistles seems to ignore the huge moisture-collecting effect of aboveground matter, such as dead plant remains, that results from condensation of dew. Experiments need to be done that control for this and for the increased amount of organic matter found at the “mother’s” site […]
- Earth
Letters from the July 16, 2005, issue of Science News
Muddy, clarified “Muddy Waters” (SN: 5/21/05, p. 328), on the deleterious effect of dams on coastal systems, contains a major conceptual error. It states that “another important cause of the ground sinking is the waning of sediment deposition by the Mississippi River.” But over the past 100 million years, the northern Gulf Coast region has […]
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19574
In your article, you describe Einstein’s negative reaction to Newton’s proposition that gravity acts instantaneously on two objects. The notion of simultaneous (if not instantaneous) properties in physics is one of the basic notions of quantum physics. I do not feel that Einstein’s “particle-like” description of light makes him (even “ironically”) “a builder of the […]
