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Textbooks brace for nuclear challenge
New data threaten to shake up 30 years of scientific dogma regarding how a cell carries out one of its most basic tasks: the translation of the genetic code into proteins.
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Killer yeast win epic battle of toxins
Researchers have discovered the molecular mechanism that keeps a yeast cell programed by a virus to spew a toxin that kills neighboring yeast cells from killing itself.
- Earth
A foamy threat to ozone
Shredding the foam insulation in discarded refrigerators can release significant quantities of chlorofluorocarbons, which pose a threat to Earth's protective ozone layer.
- Earth
Blood points to pollution’s heart risks
As airborne concentrations of fine dust particles climb, so do three blood factors that increase an individual's heart attack risk.
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18935
The statements made concerning the effect of vitamin E on the immune system in cattle don’t concur with the bulk of the data available. Many studies have indicated either marginal or no response. Only when the animal has been held on a deficient ration is the response dramatic. The idea that vitamin E could be […]
- Health & Medicine
Vitamin E benefits cattle, too
Vitamin E aids immune system function and prevents growth declines in cattle, offering an alternative to potentially dangerous use of low-dose antibiotics.
- Health & Medicine
Insight into preemies’ blindness
Lack of a growth factor called IGF-1 has been implicated as a trigger for a disease that can cause vision problems, including blindness, in premature babies.
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A Mite Bizarre
Just in case anybody thought real life paled before the twisted creatures of sci-fi movies, check the Mite Photo Gallery by biologist David Walter of the University of Queensland in Australia. Portraits of more than 40 species offer plenty of weird shapes. The peacock mite, for example, bristles with little leaf-shaped flaps, and a “pan-tropical […]
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From the July 4, 1931 issue
MAGNIFYING EYE WOULD SEE STRANGE THINGS If we could only convert our eyes into magnifying glasses at will, we would see a lot of astonishing things that escape us now because they are too small. The little walking gargoyle shown on the cover of Science News Letter, for example. It is a juvenile stage of […]
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Telltale Heart
Genetics is revealing the first steps in building a heart—the organ that is first to develop, subject to the most birth defects, and difficult to heal when damaged later in life.
- Math
Random Home Runs
For fans of major-league baseball, one of the highlights of the current season is the rate at which Barry Bonds of the San Francisco Giants is hitting home runs. Through June 25, Bonds has hit 39 home runs in 77 games, already setting the record for the most home runs before the all-star break in […]
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18934
“Faces of perception” states, “Early visual input to the right brain, which arrives via the left eye, proves vital. . . .” Then, the story presents findings based on people born with left-eye cataracts that were later removed. Unfortunately, the signals from the eyes are mixed almost immediately behind the eyes in the optic chiasma. […]
