Uncategorized
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Adding to nature’s repertoire
Modified mouse cells make proteins that include synthetic amino acids in addition to the 20 natural ones.
- Tech
More bang for the biofuel buck
Microbes that ferment glycerol to ethanol could add an economically valuable new ingredient to the biofuel industry.
- Earth
As the last ice age waned, a great lake was born
Lake Agassiz, a huge and now vanished freshwater lake, formed almost 14,000 years ago, toward the end of the last ice age.
- Health & Medicine
Hepatitis B drug creates HIV resistance
A hepatitis B drug spurs resistance to HIV drugs in people infected with both diseases.
- Chemistry
Gooey solution to a sticky problem
A new, gooey, and potentially useful protein has been extracted from the bodies of jellyfish that overpopulate the seas around Japan.
- Planetary Science
Dust delays Martian rover
A dust storm has delayed the descent of the Mars rover Opportunity into Victoria crater.
- 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.
- 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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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 […]
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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.
