5,010 results
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Seeking a definition
Pitch is determined by a sound’s frequency. Notes that sit in different positions on a musical scale, called tones, have different pitches. Modern Western music, for example, combines 12 tones, with the A at the middle of a piano keyboard having a frequency of 440 hertz. Other cultures work with fewer tones. The first few […]
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- Particle Physics
The Higgs Boson Search
Rumors — and excitement — have escalated about the latest news on the search for the Higgs boson, a particle that may explain why matter has mass.
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Plant something new
Better produce and protecting food staples at the USDA.
- Health & Medicine
Tricks Foods Play
Most people would never equate downing a well-dressed salad or a fried chicken thigh with toking a joint of marijuana. But to Joseph Hibbeln of the National Institutes of Health, the comparison isn’t a big stretch.
- Tech
When Networks Network
Once studied solo, systems display surprising behavior when they interact.
- Planetary Science
A lifetime of curiosity: An interview with JPL director Charles Elachi
Nadia Drake speaks with the lab head days before the Mars Science Laboratory’s scheduled landing.
- Life
Three monkeys a genetic mishmash
Feat suggests embryonic stem cells are less flexible in primates than mice.
- Chemistry
Molecules/Matter & Energy
A first look at the roots of sight, plus fading blues, steady birds and more in this week’s news.
- Health & Medicine
Busting blood clots with a nanoparticle
An experimental technology that delivers medication directly to a dangerous blockage might augment heart attack treatment, a new study finds.
- Math
A Mind from Math
Alan Turing, often considered the father of computer science, was born a century ago, in June of 1912. He foresaw machines’ potential to mimic brains.
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Secret of a Lifetime
How long a neutron lives holds clues to the cosmos.
