News
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Invaders can conquer Africanized bees
Bees that can take over even an Africanized-bee colony start by conning their nursemaids into giving them royal treatment.
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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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Another chromosome down, more to go
Scientists from six countries have completed the sequence of human chromosome 21.
- 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.
- Animals
Female owls: First to advertise good genes
Swiss researchers find the first case of a female flashing ornaments that advertise her gene quality to choosy males.
- Health & Medicine
New gene-therapy techniques show potential
Two technologies for transferring genes, one that uses mobile DNA called transposons and another that uses a weak virus, have proved successful in overcoming genetic disorders in mice.
- Astronomy
Astronomers find evidence of missing matter
Astronomers say they've likely confirmed that half of the hydrogen gas in the universe, which had not been accounted for, resides in relatively nearby reaches of intergalactic space.
