Uncategorized
- 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 […]
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- 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 […]
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Insect receptor for sweat creates buzz
A sweat-sensing cell-surface protein allows female mosquitoes to target human skin.
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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.
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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.
- Health & Medicine
Arsenic helps tumors, blood vessels grow
Rather than being a potential antitumor agent, arsenic may actually help a tumor's supporting network of blood vessels thrive.
- Astronomy
Stellar finding may outshine all others
Astronomers have found what may be the heaviest, biggest, and brightest star ever observed.
- Earth
Farmed salmon bring PCBs to the table
High concentrations of chlorinated organic contaminants in farm-raised Atlantic salmon may warrant limiting consumption of the otherwise-healthful fish to no more than once per month.
