Uncategorized
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19121
As many wives of depressed men will tell you, depressed husbands don’t just mope around. They are often angry, upset, unpredictable, and short-tempered. Kind words are often followed by angry words and periods of self-pity. The wife lives in a minefield and often finds it difficult to believe or accept positive comments. There is very […]
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Tough talk for depressed husbands
Positive comments directed by depressed men to their wives often elicit negative responses from the women, a conversational style that may contribute to the men's mood problems.
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19120
I read with interest your article on determining the origin of emeralds by measuring oxygen isotopes. While there is great potential for legal and historical applications, I think that using this method to determine the source of gems for purely economic reasons is ludicrous. At least for myself, whether an emerald originated in Austria or […]
- Chemistry
Where the Gems Are
By using a novel tool to figure out an emerald’s oxygen-isotope ratio, gemologists can now determine which mine the precious stone came from and, possibly, gain insights into the formation and history of these coveted gems.
- Health & Medicine
Is Snoring a DiZZZease?
Snoring may trigger high blood pressure, which can lead to heart disease or stroke.
- Animals
Pregnant—and Still Macho
Some of the basic theories of sexual behavior and sexual selection are getting attention thanks to a burst of new studies in the topsy-turvy social world of the seahorse, where the males get pregnant.
- Animals
Hormone still rules no-tadpole frogs
Coqui frogs may skip the tadpole stage, but within the egg, they undergo a metamorphosis ruled by thyroid hormone.
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Brain cells work together to pay attention
Cells in the brain's cortex may coordinate their electrical activity as attention shifts from visual to tactile information.
- Earth
Hey polluters! This billboard’s for you
Motorists generally like and respond to personalized billboard messages about when an engine tune-up may be warranted.
- Health & Medicine
HIV sexual spread exploits immune sentinels
The virus that causes AIDS latches onto a protein called DC-SIGN to hitch a ride on immune cells in mucus membranes and spread through the body.
- Health & Medicine
Cell transplants combat diabetes in mice
Scientists have successfully reversed diabetes in mice by harvesting immature pancreatic cells that make insulin from one mouse, growing them in culture, and transplanting them into a mouse with the disease, which then recedes.
- Planetary Science
Meteoric wallop may have diversified life
A new study suggests that the evolutionary burst on Earth some 540 million years ago occurred around the time that cosmic debris began pummeling our planet at an increasing rate.
