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That’s what German researchers reported last October in the New England Journal of Medicine (NEJM), based on responses from 691 heart attack survivors about their activities in the days before they fell ill. The study seemed to support the notion that tiny air pollution particles from tailpipes, along with stress, could help trigger a heart attack. 1 micrometer (µm) in diameter, the effects were minimal. If ultrafines were the main culprit, “you would have expected to see something more,” says Daniel Greenbaum, president of the Health Effects Institute (HEI) in Cambridge, Massachusetts.
Ongoing searches for other eclipsing planets 2004 to stare at the stars for several hours each, spanning the times when each planet was pre- will lead to a new cottage industry of measuring dicted to pass directly behind its sun. Like light from exoworlds, Hammel believes. “These clockwork, the total infrared light from the stars hot Jupiters are just the starting point,” she says. AGUILAR/CFA Exoplanets have finally become real. After a decade of inferring the presence of nearly 150 other worlds from oscillating patterns in starlight, astronomers announced this week that they have measured light from two of them for the first time.
Lawmakers also mandated that the National Research Council (NRC) oversee a long-term EPA particle research program funding both in-house scientists and extramural researchers. Those and other new studies have firmed up the fine particle–death link. Larger studies and new analyses verified the key epidemiological studies, which held up despite a statistics software problem that lowered the short-term risks slightly. 5. Similar patterns were reported in Europe: After Dublin banned soft coal in 1990 and levels of black smoke and sulfur dioxide (both contributors to PM) dropped, death rates from heart and lung disease declined as well.
Science (Vol. 307, No. 5717, March 2005)
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