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MathPrime Pursuit
A novel approach for identifying prime numbers provides a long-sought improvement in the theoretical efficiency of prime-detecting algorithms.
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PhysicsIntergalactic magnetism runs deep and wide
Mounting evidence that magnetic fields of surprising strength permeate intergalactic space raises questions about how the fields form and what effects they have.
By Peter Weiss -
Health & MedicineDrug Eases Bone Cancer Pain in Mice
Pain caused by bone cancer in mice can be alleviated somewhat by osteoprotegerin, a drug being tested for osteoporosis, suggesting a possible new treatment for people with this cancer.
By Nathan Seppa -
MathChanges of Mathematical State
Untangling a web of conflicting demands can be tough on computers.
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HumansFrom the May 3, 1930, issue
MOON’S SHADOW AT ECLIPSE PHOTOGRAPHED Clouds over the sun broke away at Camptonville, Yuba County, California, two minutes before the total phase of the solar eclipse of the sun. Only the lightest haze remained, and the observations planned by the various expeditions located there were carried through successfully. The Lick Observatory-Crocker expedition under the direction […]
By Science News -
AstronomyA Hubble Decade
To celebrate the Hubble Space Telescope’s 10th anniversary, the Space Telescope Science Institute in Baltimore, Md., has created a new Web site devoted to the Earth-orbiting telescope and its spectacular images. Offering much more than pretty pictures, the site recounts Hubble’s discoveries, illustrates how the telescope works, and suggests various educational activities and games. Until […]
By Science News -
Spying on Plant Defenses: Insects monitor toxin ramp-up
A common caterpillar can sense when a plant is gearing up to manufacture insecticidal toxins and respond by starting up its own detoxification system.
By Susan Milius -
EarthSnowball Melting? Ancient formation shows glacier activity
An ancient, well-preserved glacial formation in Oman provided evidence that Earth experienced intermittent ice ages like those in Earth's more recent history.
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HumansNobel Chemistry: Laureates’ techniques enable researchers to probe large biomolecules
The 2002 Nobel Prize in Chemistry recognized the work of three scientists who created tools for analyzing proteins and other large biological molecules.
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EarthContraceptive-Patch Worry: Disposal concern focuses on wildlife
Some scientists now worry that discarded contraceptive patches may leak synthetic estrogen into the environment, potentially harming wildlife.
By Janet Raloff -
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Your readers need not wait to do less crying in the kitchen. All you have to do is put the onions in the refrigerator for a half hour or in the freezer for 10 minutes. Daniel F. BarightLebanon, Mo. Another solution is to do the chopping outside. I have found that more turbulent, outside air […]
By Science News -
Health & MedicineLess Crying in the Kitchen: Tasty, tearfree onions on the horizon
The discovery of a new enzyme responsible for creating the tear-inducing chemicals found in onions may herald the arrival of genetically modified tearfree onions.