News
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Math fears subtract from memory, learning
In a study of college students, high levels of anxiety about taking mathematics tests interfered with memory processes needed to perform difficult arithmetic problems.
- Animals
Microbe lets mite dads perform virgin birth
A gender-bent mite—in which altered males give birth as virgins—turns out to be the first species discovered to live and reproduce with only one set of chromosomes.
- Earth
Ozone flares with fireworks festivities
Holiday fireworks and sparklers trigger ozone-generating chemical reactions in the lower atmosphere.
- Health & Medicine
Critical Care: Sugar Limit Saves Lives
Strictly controlling blood-sugar concentrations in critically ill patients can reduce deaths by a third.
- Health & Medicine
Forget about jet lag, and much more
Airline flight attendants with chronic jet lag have higher stress hormone concentrations and smaller temporal lobes (centers of short-term memory in the brain)than do more rested attendants.
- Health & Medicine
Prostate protection? This is fishy
Diets rich in fish may cut a man's risk of prostate cancer.
- Animals
Fruit flies hear by spinning their noses
Drosophila have a rotating ear—and odor-sensing—structure that's new to science.
- Health & Medicine
Studies suggest how salad may protect heart
Lutein, a yellow pigment in many fruits and vegetables, may inhibit processes that jump-start the development of atherosclerosis.
- Chemistry
Chemists decorate nanotubes for usefulness
Researchers have developed a new technique for attaching groups of atoms to the sides of carbon nanotubes, creating compounds with extraordinary strength and conductivity.
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Babies may thrive on wordless conversation
Although unable to say a word, 4-month-olds coordinate the timing of their vocalizations with those of adult partners in conversational ways that may have implications for social and intellectual development.
- Health & Medicine
Leukemia overpowers drug in two ways
Researchers discover why the anticancer drug Gleevec, also called STI-571, helps many patients who have chronic myelogenous leukemia but not those who have entered the crisis stage of the disease.
- Paleontology
Two new dinosaurs chiseled from fossil gap
A sleek predator and a pot-bellied giant dinosaur have emerged from North American rocks to fill in a 30-million-year gap in the dinosaur fossil record.
