Uncategorized
-
19375
This article, or at least part of it, could have been titled “Danger on Dock” or maybe “Danger under Dock.” After reading about how chromated-copper arsenate (CCA) is leached from the wood, I began wondering how it affects aquatic organisms. Many fish, especially bluegills and other sunfish, make these docks their preferred habitat. If not […]
- Health & Medicine
Telltale Charts
Overturning a basic tenet of conventional wisdom in cardiology, new research suggests that more than half the people who develop heart disease first show one of the warning signs of smoking, having diabetes, or having high blood pressure or cholesterol.
-
19374
Something jumped out at me from this article. It’s that there were no published data supporting the 50 percent rule taught for years in medical schools. I think this speaks volumes about science and medicine in this country. Charlie WelchBrighton, Mass. I’m confused. “Wine Surprise: Heart-protective effect is independent of antioxidants” (SN: 1/31/04, p. 68: […]
- Math
Folding Paper in Half—Twelve Times
You can’t fold a sheet of paper in half more than seven or eight times, no matter how large the sheet or thin the paper may be. How often have you heard that statement? Perhaps you’ve even put this assertion to the test. And, indeed, it is difficult to get beyond about seven or eight […]
-
- Humans
From the January 20, 1934, issue
alt=”Click to view larger image”> GRAVE OF PREHISTORIC CHIEF’S DAUGHTER EXCAVATED A girl of 20, almost toothless! This is the pathetic picture of prehistoric Alaska revealed in the skeleton of an Eskimo chief’s daughter. The grave of the girl, discovered in southwestern Alaska by Dr. Frederica de Laguna of the University of Pennsylvania Museum, yielded […]
- Humans
Telegraph Days
Samuel F.B. Morse invented the electromagnetic telegraph and the Library of Congress holds an extensive collection of his papers. About 6,500 of these documents are now available online. They document Morse’s invention, his participation in the development of telegraph systems in the United States and abroad, his career as a painter, his family life, his […]
-
Insect receptor for sweat creates buzz
A sweat-sensing cell-surface protein allows female mosquitoes to target human skin.
-
Hot or cold? Debate on protein heats up
Wasabi and horseradish trigger the same pain-signaling receptor on nerve cells.
- Materials Science
Nanotube implants could aid brain research
Electrically conducting carbon nanotubes could be the ideal material for probing the brain and treating neural disorders.
-
19296
The political pseudoscience press strikes again. Now, we are told that by 2050, as many as 31 percent of species will be wiped out by a temperature increase of 0.8 to 1.7°C. I find this impossible to believe, in that these organisms are all presently surviving with diurnal, seasonal, yearly, and cyclical average-temperature fluctuations that […]
- Earth
Warming climate may slam many species
Expected increases in global temperature could eradicate from a sixth to a half of the plant and animal species across large areas of the globe, a new analysis suggests.
