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Fires in Alaska and Canada caused sharp increase in Houston's ozone level
Forest fires that ravaged parts of eastern Alaska and western Canada in 2004 exacerbated the already-high levels of ozone pollution in Houston, Texas, some 5,000 kilometers [3,000 miles] away.   view more (2006-09-25)

NASA study: Alaskan fires affected Houston air quality in 2004
An innovative new NASA-funded study based on a combination of satellite data, computer models and weather balloon readings finds that smoke from Alaskan and Canadian forest fires as much as doubled ground-level ozone thousands of miles away in Houston during a two-day period in July 2004.   view more (2006-09-22)

High hourly air pollution levels more than double stroke risk
High hourly levels of air pollution, more than double the risk of one type of stroke, suggests research published ahead of print in Occupational and Environmental Medicine.   view more (2006-09-21)

Pitt professor designs less-risky reactor for clean, safe energy
Reactors that burn hydrogen or natural gas to generate energy can be dirty and dangerous. The mix of air with hydrogen or natural gas can explode easily if composition and temperature are not carefully controlled. And reactors often produce polluting byproducts.   view more (2006-09-13)

Planet or failed star? One of smallest stellar companions seen by Hubble
Astronomers using the NASA/ESA Hubble Space Telescope have photographed one of the smallest objects ever seen around a normal star beyond our Sun. Weighing in at 12 times the mass of Jupiter, the object is small enough to be a planet.   view more (2006-09-11)

Exposure to PCBs May Reduce the Effectiveness of Vaccines in Children
New epidemiological evidence suggests that exposure to environmental pollutants may have an adverse impact on immune responses to childhood vaccinations.   view more (2006-08-23)

Scientists find 'pinwheels' in Quintuplet cluster
Discovery of pinwheel-shaped dust spirals around two of the mysterious cocoon stars in the Quintuplet cluster tells scientists for the first time that they contain a duo of stars instead of just one.   view more (2006-08-21)

Mystery of Quintuplet stars in Milky Way solved
For the first time, scientists have identified the cluster of Quintuplet stars in the Milky Way's galactic center, next to the super massive black hole, as massive binary stars nearing the end of their life cycle, solving a mystery that had dogged astronomers for more than 15 years.   view more (2006-08-21)

Surprising telescope observations shake up galactic formation theories
A heavy form of hydrogen created just moments after the Big Bang has been found to exist in larger quantities than expected in the Milky Way, a finding that could radically alter theories about star and galaxy formation, says a new international study led by the University of Colorado at Boulder.   view more (2006-08-15)

'Hidden' Milky Way deuterium found
Scientists using NASA's Johns Hopkins University-operated Far Ultraviolet Spectroscopic Explorer satellite have learned that far more "heavy" hydrogen remains in our Milky Way galaxy than expected, a finding that could radically alter theories about star and galaxy formation.   view more (2006-08-15)

Washington Getting a Summertime Air Quality Exam
Summer in the city can often mean sweltering "bad air days" that threaten the health of the elderly, children and those with respiratory problems. This summer the nation's capitol has been no stranger to such severe air-quality alerts.   view more (2006-08-07)

New report says human tampering threatens planet's life-sustaining surface
In a report released today, scientists call for a new systematic study of the Earth's "critical zone"-the life-sustaining outermost surface of the planet, from the vegetation canopy to groundwater and everything in between.Understanding and predicting responses to global and regional... view more (2006-08-02)

A simple survey yields a cosmic conundrum
A survey of galaxies observed along the sightlines to quasars and gamma-ray bursts-both extremely luminous, distant objects-has revealed a puzzling inconsistency. Galaxies appear to be four times more common in the direction of gamma-ray bursts than in the direction of quasars.   view more (2006-08-01)

World Trade Center dust cuts lung function capability in rescue workers
New York City firemen and emergency personnel exposed to dust from the collapse of the World Trade Center buildings experienced a decrease in lung function capability equal to 12 years of age-related decline during the year following the 9/11 disaster.   view more (2006-08-01)

Cosmic dust in ice cores sheds light on Earth's past climate
Each year nearly 40,000 tons of cosmic dust fall to Earth from outer space. Now, the first successful chronological study of extraterrestrial dust in Antarctic ice has shown that this amount has remained largely constant over the past 30,000 years, a finding that could help refine efforts to... view more (2006-07-31)

Cosmic dust in terrestrial ice
For the last 30,000 years, our planet has been hit by a constant rain of cosmic dust particles.   view more (2006-07-28)

Where are the supermassive black holes hiding?
European and American scientists, on a quest to find super-massive black holes hiding in nearby galaxies, have found surprisingly few. Either the black holes are better hidden than scientists realised or they are lurking only in the more distant universe.   view more (2006-07-27)

NASA Africa mission investigates origin, development of hurricanes
Scientists from NASA, the National Oceanic and Atmospheric Administration, universities and international agencies will study how winds and dust conditions from Africa influence the birth of hurricanes in the Atlantic Ocean.   view more (2006-07-27)

Allergy battle could be won in five years, says scientist
Researchers, working with colleagues at St George's, University of London, are developing drugs designed to stop allergens from entering the body, so rendering them harmless.   view more (2006-07-13)

DDT in mothers linked to developmental delays in children, UC Berkeley study finds
Since the 1970s, scientists have known that when DDT accumulates in a woman's tissues it can be transmitted to her developing fetus across the placenta.   view more (2006-07-06)

Saturn's faint rings share some of their secrets
NASA Cassini spacecraft images of Saturn's diaphanous G and E rings are yielding new clues about their structure and formation.   view more (2006-07-06)

Avoiding house dust mites and changing diet proves ineffective
New research shows avoiding house dust mite allergens from birth does not prevent the onset of asthma, eczema or atopy in high-risk children.   view more (2006-06-29)

Pesticides exposure associated with Parkinson's disease
In the first large-scale, prospective study to examine possible links between chronic, low-dose exposure to pesticides and Parkinson's disease (PD), researchers at the Harvard School of Public Health (HSPH) have shown that individuals reporting exposure to pesticides had a 70 percent higher... view more (2006-06-27)

Tropical rainforest nutrients linked to global carbon dioxide levels
Extra amounts of key nutrients in tropical rain forest soils cause them to release more carbon dioxide into the atmosphere, according to research conducted by scientists at the University of Colorado (CU)—Boulder.   view more (2006-06-21)

Pollen proves beneficial for northern lakes
Mention the word pollen to most people and it triggers thoughts of their battle against allergic reactions. However, a University of Alberta researcher has found an important spin-off for this fine yellow dust-like powder.   view more (2006-06-13)
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