Uncategorized
- Health & Medicine
Mouse method turns skin cells to stem cells
Reprogrammed mouse skin cells that act as stem cells may offer an alternative for research involving embryos.
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19855
As an experienced emergency physician, I can assure you that physicians who choose not to use tPA for stroke are not, as characterized in this article, “insufficiently trained or too conservative”. There has been, to my knowledge, no study that has shown decreased mortality with the use of tPA for acute stroke. Most of the […]
- Health & Medicine
Brain Attack
Although they have explored many promising ideas, scientists are finding it difficult to develop new treatments to limit the damage caused by ischemic strokes.
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- Humans
Letters from the July 14, 2007, issue of Science News
At least a few years to prepare “Northern Exposure: The inhospitable side of the galaxy?” (SN: 4/21/07, p. 244) posits that every 64 million years a mass die-off occurs due to increased cosmic rays. When will the cosmic rays again be at their maximum? Robert RichardsMetairie, La. The article failed to mention when the next […]
- Humans
From the July 3, 1937, issue
A spectacular freak photograph of a solar eclipse, meteorites as the remnants of lost planets, and inducing dropsy in animals.
- Ecosystems
Sawfish Central
Sawfish will soon be getting United Nations protection from exploitation. Right now, the only U.S. state where these ancient fish can generally be found—and then, only rarely—is Florida. Here’s a site to view the fish, a member of the shark family, and link to research aimed at rescuing populations of its seven beleaguered species worldwide. […]
- Math
Sudoku and Graph Theory
Solving sudoku puzzles may not require mathematics, but mathematicians have found plenty to say about the popular brainteasers.
- Health & Medicine
Spermicide Flip Side: Compound may promote papillomavirus infection
The widely used spermicide nonoxynol-9 may boost the infectiousness of human papillomavirus, mouse tests show.
- Physics
Dropping the Ball: Air pressure helps objects sink into sand
A ball plunges deeper into sand under atmospheric pressure than under a vacuum, because the presence of air allows sand to flow like a liquid.
- Materials Science
Allergy Nanomedicine: Buckyballs dampen response of cells that trigger allergic reactions
Drugs based on soccer ball–shaped carbon molecules could one day help fight allergies.
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Hidden Smarts: Abstract thought trumps IQ scores in autism
Autistic children and adults do better on a nonverbal test of abstract reasoning than they do on standard IQ tests, suggesting that their intelligence has been underestimated.
