All Stories
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Buddy power warms tent caterpillars
Tent caterpillars get more heat and insulation than scientists had expected.
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Family success prompts tit divorces
For the first time, researchers have shown that bird pairs are more likely to divorce after raising young than after losing a nest of offspring.
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Soy, tea, and cancer benefits
Animal studies indicate that enriching diets with soy and tea fights cancer better than adding either alone.
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Are some fats more filling?
Substituting monounsaturated fats for polyunsaturated ones in cooking may hold hunger at bay longer.
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Diabetes drug cures infertility and more
A common diabetes drug helps treat obesity and cure the infertility associated with polycystic ovary disease—even in people without diabetes.
- Health & Medicine
Sweet news about ginseng
When taken before or with meals, ginseng appears to help people with diabetes control the normal rise in blood sugar that accompanies eating.
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19149
It was with great interest that I read this article. I realize that such articles aren’t comprehensive reviews of the literature, but I must point out that we have recently published in Virus Genes direct experimental evidence that supports the involvement of endogenous retrovirus in embryo implantation. Luis P. Villarreal University of California Irvine, Calif.
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Placental Puzzle
Do captured viral genes make human pregnancies possible?
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19189
I feel the need to comment on the misconception that trisomies of other than chromosome 21 don’t survive birth. I have a friend whose daughter is a trisomy 18 and just celebrated her 19th birthday and other friends whose children with trisomies are nearing their teenage years. My own son, a trisomy 13, lived for […]
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Another chromosome down, more to go
Scientists from six countries have completed the sequence of human chromosome 21.
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19148
Newton derived theories about gravity by studying stationary or very slowly moving objects. Laboratory measures of G performed since share this fundamental approach. While this may accurately measure G, any possible relative velocity dependence to this constant or to the force of gravity goes undetected. Determining that force involves only the masses, the separation, and […]
- Physics
Gravity gets measured to greater certainty
Important but imprecisely measured, the gravitational constant, G, is given its most exact experimental value yet, while a pioneering investigation into gravity finds that extra dimensions, if they do exist, occupy spaces of less than a couple tenths of a millimeter.
