Uncategorized
- Health & Medicine
Exhaust fumes might threaten people’s hearts
Nanoparticles in diesel fumes thwart proteins that dissolve blood clots, perhaps increasing the risk of heart attacks.
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19884
A researcher cited in this article recommends that people at risk of heart attack should avoid exercising outdoors on highly polluted days. What an odd conclusion, on two counts: First, that avoidance, instead of elimination of the poison from the air we breathe, is the recommended course of action; and second, that only “at risk” […]
- Physics
Not flipping out
A single atom on a surface has favored magnetic orientations that could allow it to encode a data bit.
- Earth
Clearly Concerning
The toxicity of a chemical that leaches from a widely used plastic receives conflicting evaluations in two new reviews.
- Math
Beating the Bush for Patterns
Across some arid landscapes, sparse vegetation grows in fractal patterns that hold clues to its resilience.
- Humans
Letters from the September 29, 2007, issue of Science News
Questioning the surge “The Power of Induction” (SN: 7/21/07, p. 40) was written as if this was a newly discovered technology. I have been using an electric shaver with induction recharging for years. Mike YorkPhoenix, Ariz. The ability to project electrical power some distance suggests a possible method to detonate or disable improvised explosive devices. […]
- Physics
Electron Superhighway
The remarkable strength and electrical properties of graphene, a chicken-wire network of carbon atoms, make it a promising new material for computer chips.
- Humans
From the September 18, 1937, issue
Wiping out insects not a good idea, a novel compound for preventing deadly blood clots, and firecrackers making fireflies flash faster.
- Earth
Toxipedia
Ever wonder whether some chemical in a bathroom cleanser, herbicidal spray, or paint is toxic? Just how poisonous is that chemical described in last week’s Science News? Toxicologists are developing one-stop shopping for such information at Toxipedia. Like Wikipedia, it allows the public—experts, advocates, or policymakers—to post information. Unlike Wikipedia, there is a rating system […]
- Health & Medicine
The Breast Solution
Reversing earlier advice, health authorities now say that babies of HIV-positive mothers in poor countries have a better chance of avoiding infection if they feed only on breast milk that's not supplemented with other food.
- Tech
Nanotube Press: Printing technique makes nanotransistors
A new technique for printing networks of carbon nanotubes on a wide range of surfaces is a step toward mass production of nanotubes devices.
- Paleontology
Bumpy Bones: Fossil hints that dinosaur had feathery forearms
A series of knobs on the forearm bone of a 1.5-meter-long velociraptor provides the first direct evidence of substantial feathers on a dinosaur of that size.
