Uncategorized
- Math
Math Class Artifacts
Do you recall the 7-foot-long slide rule that used to hang above the blackboard in math class? Ever wonder who invented graph paper? Have you worked with a geoboard? The Smithsonian’s National Museum of American History has put together an exhibit displaying tools used to teach mathematics in the United States from the 1800s to […]
- Health & Medicine
Indoor tanning ups all skin cancer rates
Artificial sunbathing using ultraviolet lights increases the risk of all types of skin cancer.
- Physics
A new way to stick it to flies
Researchers have measured the amount of static charge that a walking house fly generates.
- Earth
Shuttle yields detailed, 3-D atlas
NASA scientists and Defense Department mapmakers are assembling billions of radar measurements made from the space shuttle Endeavour to produce what they say will be the world’s best topographic map.
- Paleontology
Dinosaur tracks show walking and running
A single trail of dinosaur footprints found in a British limestone quarry preserves a record of two different walking styles in the same animal, a tantalizing clue that some types of lumbering, bipedal dinosaurs could also run if the need arose.
- Planetary Science
Galileo at Jupiter: The goodbye tour
After more than 6 years spent touring Jupiter and its four largest moons, the Galileo spacecraft’s mission is beginning to wind down.
-
Infants emerge as picky imitators
By the age of 14 months, babies display a feel for evaluating the sensibility of an adult's behavior and either imitating the means to a goal or opting for a simpler way to achieve the same result.
- Astronomy
The Milky Way’s Middle
Sensitive X-ray, infrared, and radio telescopes are now providing an extraordinarily clear view of the dust-shrouded center of our galaxy.
- Health & Medicine
Alzheimer’s vaccine trial is suspended
A drug company in Ireland has halted tests of an experimental vaccine for Alzheimer's disease.
- Tech
Itsy chain turns bitsy gears
A tiny chain with links the size of biological cells offers a new way to deliver power to micromachines.
-
Disorder Decline: U.S. mental ills take controversial dip
Far fewer people suffer from mental disorders requiring treatment than was initially indicated by two national surveys.
-
Cool Discovery: Menthol triggers cold-sensing protein
A cell-surface protein that lets ions flow into cells responds to menthol and cool temperatures.
