Uncategorized
- Ecosystems
Alien Alert: Shrimpy invader raises big concerns
A shrimplike European invader just discovered in the Great Lakes could prove ecologically disruptive to populations of native lake animals.
- Astronomy
Fleet Finding: Speed of Milky Way’s companions poses puzzle
New measurements of the speed of two familiar companion galaxies to the Milky Way suggest some unfamiliar possibilities.
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19780
Would it be feasible for the government to require both folate and vitamin B12 in grain products? Nancy PowerAltadena, Calif. Researchers say that such double fortification is theoretically possible. However, vitamin B12 is more expensive than folate, and it turns flour pink. —B. Harder
- Health & Medicine
Folic Acid Dilemma: One vitamin may impair cognition if another is lacking
The nutrient folic acid is generally good for brain health, but research now suggests that too much of it might harm people who get too little vitamin B12.
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Genes discovered for sensing carbon dioxide
Researchers have tracked down a pair of genes that, together, seem responsible for some insects' ability to sense carbon dioxide.
- Humans
Congress upgrades fisheries protection
Congress has reauthorized and strengthened a 30-year-old federal law governing fishing and ocean management.
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19779
Do cows and other domestic-herd animals really emit more methane than bison and other wild-herd animals emitted before people came along? Do grass, alfalfa, and other pasture plants remove less carbon dioxide than do forests? There were open grasslands before pastures replaced some forests. I hope the people who are researching these things take such […]
- Agriculture
Big footprints
Livestock production carries surprisingly high, and largely hidden, environmental costs.
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Stem cells float in amniotic fluid
Scientists have discovered a new type of stem cell in the fluid that bathes fetuses in the womb.
- Health & Medicine
Putting the kibosh on black cohosh
The herbal supplement black cohosh is no more effective than a placebo in reducing the number of daily hot flashes in menopausal women.
- Health & Medicine
Good news for people with clotting disorder
Several experimental drugs show promise against the bleeding disorder known as immune thrombocytopenic purpura.
- Tech
A backpack with a suspension system
A new backpack design that uses elastic cords to minimize the pack's vertical motion could lessen bodily strain on wearers and reduce the effort required to carry a load.
