Uncategorized
- Astronomy
Taste of a Comet: Spacecraft samples and views Wild 2
Pummeled by debris, a NASA spacecraft last week snatched up dust samples while taking the sharpest images ever of a comet's icy core.
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- Earth
When testosterone gets down and dirty
Testosterone excreted by livestock can pass through soils, which may explain new findings of fish-altering hormonal activity in water downstream of cattle feedlots.
- Astronomy
X-ray images highlight galaxy collisions
A new study provides graphic evidence that X-ray observations may be the best way to identify ancient collisions between galaxies.
- Health & Medicine
SARS vaccine triggers immunity in monkeys
An experimental vaccine against the SARS virus shows promise in a test on monkeys.
- Earth
Infrasonic Symphony
Scientists are eavesdropping on volcanoes, avalanches, earthquakes, and meteorites to discern these phenomena's infrasound signatures and see what new information infrasound might reveal.
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19365
I do not know about the rest of your readers, but I do “hear” at least some low frequency sounds, but not with my ears. The nerves in my feet feel these vibrations and my brain parses the sounds to my flight-or-fright processor before I can process any conscious perception. Ray BryanSt. Paul, Minn.
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19360
In the arts, we say that material, such as paper, that deteriorates readily because of its composition has “internal vice.” I suppose that could be said of newspapers on several grounds. Lawrence Wallin Santa Barbara, Calif.
- Materials Science
News That’s Fit to Print—and Preserve
Analyses of newsprint materials suggest that, despite their frail appearance, newspapers can last more than 200 years in storage—a fact that calls into question the merits of microfilming.
- Humans
From the December 30, 1933, issue
NEW PIPE LINE TO BRING MORE WATER TO LOS ANGELES More water for Los Angeles is the purpose of the big steel serpent that the front cover of this weeks Science News Letter strikingly pictures climbing a mountain. This project, an achievement of electric welding, is conquering canyon and straddling mountain to join Boquet Canyon […]
- Math
Perfect Magic Cubes
A magic cube is a three-dimensional array of whole numbers, in which each row, column, and body diagonal (corner to corner, through the center) adds up to the same total. A perfect magic cube is one in which the diagonals of each vertical or horizontal slice through the cube also sum to the same value. […]
- Tech
Gene Screen: Ultrasensitive nanowires catch mutations
Researchers have devised a nanowire sensor that binds to DNA molecules and produces an electrical signal almost instantaneously.
