Daily non-political popular news in brief.
Tipping points
08-06-2007 · EurekAlert!Growing food and fiber entails the use of fertilizer and irrigation systems and results in land clearing. These "side effects" of agriculture can lead to regime shifts -- or "tipping points" which include desertification, salinisation, water degradation and changes in climate due to altered water flows from land to atmosphere.
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Keywords: tipping, points, point
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- 'Tipping points' could come this century
02-04-2008 · EurekAlert!
A number of key components of the Earth's climate system could pass their 'tipping point' this century, according to new research led by a scientist at the University of East Anglia.
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- Research finds that Earth's climate is approaching 'dangerous' point
05-31-2007 · EurekAlert!
NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth's climate close to critical tipping points, with potentially dangerous consequences for the planet.
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- Stanford researchers clarify protein's role in multiple sclerosis
06-13-2007 · EurekAlert!
A protein found primarily in the lens of the eye could be the critical "tipping point" in the spiral of inflammation and damage that occurs in multiple sclerosis, researchers at the Stanford University School of Medicine report.
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- Quantum effects writ large
02-15-2007 · EurekAlert!
A team of physicists from Rice University, Rutgers University, and the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany, reports this week in the journal Science the discovery of surprising quantum effects in a member of a broad class of materials that include high-temperature superconductors and quantum magnets. The effects were observed at a "quantum critical point," a tipping point at which the quantum properties of the material undergo a radical change.
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- Arctic sea ice decline may trigger climate change cascade, says University of Colorado study
03-15-2007 · EurekAlert!
Arctic sea ice that has been dwindling for several decades may have reached a tipping point that could trigger a cascade of climate change reaching into Earth's temperate regions, says a new University of Colorado at Boulder study.
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- Geographer designs computer model to predict crowd behavior
05-21-2007 · EurekAlert!
Patterns of human behavior and movement in crowded cities -- the tipping point at which agitated crowds become anti-social mobs, the configuration of civic areas as defensible spaces that also promote free speech, the design of retail space that fosters active walking -- are at the core of an immersive 3-D computational model under development by an Arizona State University geographer.
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- Predicting catastrophic transitions
05-22-2007 · EurekAlert!
Complex systems, such as the earth's climate, coral reefs, oceans and socioeconomic systems, seem to respond little to gradual change until a critical tipping point is reached, after which the system may collapse completely. After such collapse, the original state of the system is hard to restore. Recovery time after small disturbances may predict coming collapse.
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- Reef warns of sea level rise
11-08-2006 · EurekAlert!
Margaret River in Western Australia, famed for its wine, is about to become famous for another reason -- warning coastal dwellers what they may have to cope with under global warming. A fossil coral reef, lying several metres above today's high tide mark at Foul Bay near Margaret River, points to the high point of the last major sea level rise.
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- Seven-point system gauges seriousness of heart failure in elderly
11-09-2006 · EurekAlert!
A simple points system may soon help guide treatment of elderly heart failure patients. Researchers at Washington University School of Medicine in St. Louis found that by counting how many of seven easy-to-obtain health factors a patient has, physicians can estimate the patient's risk of dying.
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- Study: Immigration can lower prices of consumer products
08-23-2007 · EurekAlert!
A forthcoming study challenges the predictions of the perfectly competitive model -- that an increase in demand leads to higher prices. Instead, the study finds that immigration can lower the prices of food, clothing, furniture, and appliances and have a significant moderating effect on inflation. Saul Lach (Hebrew University of Jerusalem and the CEPR) finds that a one percentage point increase in the ratio of immigrants to natives in a city decreases prices by 0.5 percentage points on average.
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