Uncategorized
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Much psychosis in elderly may go unnoticed
Swedish researchers identified hallucinations and other psychotic symptoms in 10 percent of a sample of 85-year-olds, a much larger figure than previously reported for elderly people.
- Astronomy
Some gamma-ray bursts may occur nearby
A sizable minority of gamma-ray bursts may originate relatively nearby, in galaxies within 325 million light-years of our own.
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18987
The discovery that silicon would explode is not news to me. I made a serendipitous discovery over 20 years ago as a computer hobbyist. I discovered that silicon would explode when I accidentally injected 15,000 volts into some integrated circuits designed for 5 volts. Fortunately, the detonations were small and no damage was done to […]
- Chemistry
Detonating silicon wafers can ID elements
Researchers have discovered a way to make certain silicon wafers explode on command.
- Health & Medicine
Gene Variant Tied to Human Aging
Variants of a gene linked to mouse aging are more prevalent in elderly people than in newborns, suggesting that the gene influences human aging or specific age-related illnesses.
- Health & Medicine
Cloning’s ups and downs
Dolly, the world's first cloned mammal, has developed arthritis, and two biotech firms have turned to cloning in their attempt to create pigs with organs that human bodies won't reject when transplanted.
- Health & Medicine
Cancer fighter reveals a dark side
Overactivity of a tumor-suppressing gene shortens the lifespan of mice.
- Humans
From the January 16, 1932, issue
A PHARAOH’S RIGHTHAND MAN Add the name of Ken-Amun, ambitious Egyptian politician, a Pharaoh’s righthand man, to the list of unusual personalities from ancient Egypt. Ken-Amun’s tomb, cut into a rocky hillside in the Valley of the Kings, has been known for almost a century, but has been strangely neglected. Now, it has been thoroughly […]
- Astronomy
Planet Quest
Need help in tracking discoveries of planets orbiting stars beyond our solar system? NASA’s new Planet Quest Web site offers one-stop shopping for planet discovery news. Check out the latest findings, search an atlas of extrasolar planets, and learn about NASA’s proposed missions to search for new worlds, particularly those that might harbor life. Interactive […]
- Materials Science
Flattery for Faience
By replicating ancient materials with their own hands, researchers are gaining new insights into details of Egyptian faience manufacture that have been lost for thousands of years.
- Planetary Science
Exploring the Red Planet
Searching for signs of subsurface water on the Red Planet and analyzing the elemental and mineral composition of surface rock, NASA's Mars Odyssey spacecraft begins its main mapping mission next month and may shed light on several enduring puzzles about the planet.
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18986
If the stones in this article simply were used for grinding ocher to make powder, would not the grinder rough up the surface to make it a better grindstone? The marks may be nothing more than primitive knurls. Rather than art, this looks like a tool to me, not different in principle from flaked flint. […]
