Uncategorized
- Humans
From the March 9, 1935, issue
How early fish learned to swim, a long-distance record for short radio waves, and tidal effects inside Earth.
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Ospreys in the Classroom
The University of Minnesota’s Raptor Center offers a set of multidisciplinary lesson plans introducing students from grades four through eight to raptors. Topics range from predator-prey relationships and habitats to environmental sampling. The lessons focus mainly on learning about ospreys. Go to: http://www.cvm.umn.edu/depts/raptorcenter/education/lessonplans/
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Bacterial Nanny: Beewolf grows microbe for protecting young
A European wasp leaves a smear of bacteria near each of her eggs as protection against the perils of youth.
- Materials Science
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel engine parts takes effect only at high pressures.
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19527
Regarding the therapeutic effects of sunflower-seed oil on infants, has any research been done as to the health benefits of the oil in any other age group? Yael LevyNew York, N.Y. Research to date has focused on newborns, says researcher Gary L. Darmstadt of Johns Hopkins University in Baltimore. However, a few studies have suggested […]
- Health & Medicine
Anoint Them with Oil: Cheap-and-easy treatment cuts infection rates in premature infants
Massaging premature babies with sunflower-seed oil can cut bloodborne infection rates.
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19526
This article includes three images of the Arches cluster near the center of the Milky Way, each taken with a different telescope. I’d be interested to know what the three telescopes are. John McKeeBrunswick, Maine In the trio of progressively sharper (left to right) images, the leftmost one was taken in 1994 with a 3-meter […]
- Astronomy
Weighing In on a Star: A stellar size limit
A new study suggests that no star in our galaxy can weigh more than 150 times the mass of the sun.
- Planetary Science
Slowpoke: Atmosphere put brakes on meteorite that formed famed crater
The extraterrestrial object that gouged out Arizona's Meteor Crater about 50,000 years ago struck at a speed much slower than most scientists had previously proposed.
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Monkey See, Monkey Think: Grape thefts instigate debate on primate’s mind
Rhesus monkeys treat a competitor's averted eyes as a license to steal his or her food.
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19525
Evidence of animals sensing where people are looking and what they’re seeing is interesting yet hardly new. For years, I have observed that wild rabbits will remain motionless as long as I stare in their direction. But as soon as I avert my eyes or turn my head, the rabbit is gone. Clearly, they correctly […]
- Health & Medicine
Blindness Hazard: Gene variant tied to macular degeneration
People who make a particular form of an immune system protein have a heightened risk of developing old-age blindness.
