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For the first time, research shows that nanoparticles called fullerenes are filtered out of water by oysters and taken up by their liver cells.
Fullerenes may cause long-term health problems in oysters and reduced survival and reproduction. 16 November 2009. More...
Management measures that keep unwanted pests out of buildings and apartments can control cockroaches and their associated allergens better than traditional pesticide sprayings.
This is the first study to show how a one-time, low cost visit by professionals can effectively reduce the insects' populations for up to six months. Sealing cracks and using bait traps--rather than periodic pesticide applications--to control the pests lowers people's indoor exposures to unhealthy toxic chemicals and allergens that can lead to asthma. 22 June 2009. More...
Researchers report that chemical contaminants in soil suppress crop yields of alfalfa by interfering with chemical signaling essential for nitrogen fixation.
They estimate that over a full growing season crop yields may be decreased by as much as one-third. The contaminants interfere with how nitrogen-fixing bacteria communicate with their plant hosts using phytoestrogens. 6 June 2007. More...
Scientists report that bacterial resistance to antibiotics important for fighting human disease is heightened in ground and surface waters downstream of a factory pig farm.
The water sources below the swine feedlot also contained higher concentrations of the three types of intestinal bacteria studied than the surface and groundwater tested above the facility. The results show that waste from a swine CAFO can contribute antibiotic-resistant fecal bacteria to natural water systems. 18 May 2007. More...
Toxic gases, including ammonia and hydrogen sulfide, are emitted from concentrated animal feeding operations.
Microbial exposures, especially to endotoxins, are related to deleterious respiratory health effects. Malodors may be linked to psycho-physiological changes. But there are few data on the health effects of these exposures to people living in the surrounding areas. Environmental Health Perspectives. 17 November 2006. More...
The industrialization of livestock production and the widespread use of non-therapeutic antimicrobial growth promotants has intensified the risk for the emergence of new, more virulent, or more resistant microorganisms.
These have reduced the effectiveness of several classes of antibiotics for treating infections in humans and livestock. Recent outbreaks of virulent strains of influenza have arisen from swine and poultry raised in close proximity. Environmental Health Perspectives. 17 November 2006. More...
The case for environmental anti-androgens altering male reproductive development continues to gather more evidence.
Within the last decade, several classes of chemicals have been shown in laboratory studies to disrupt reproductive development by acting as androgen receptor (AR) antagonists and/or inhibitors of fetal Leydig cell testosterone production. New research has also revealed the presence of androgens in the environment. Effluents from pulp and paper mills and from beef cattle farms has androgenic activity. International Journal of Andrology 1 February 2006. More...
Science Byte: North Carolina children are more likely to be exposed in school to pollution arising from large hog farms if they are poor and not white.
Odor from livestock was noticeable outside 21% of schools sampled, and inside 8% of them. Livestock odors at public schools, particularly those in economically disadvantaged areas, may have broad implications for schools and communities. EHP. 10 November 2005. More...
A study in Harlem finds that IPM is a cost effective intervention for cockroach control, without dangerous pesticides.
A study in east Harlem NY shows that over a six month period IPM can cut cockroach infestations dramatically, as or more cheaply than conventional chemical pesticide treatments. 3 July 2003. More...
A study of women living in Filipino farming households finds regular use of pesticides is associated with increased risk of adverse pregnancy outcomes.
Compared to farmers who used pesticides only when necessary, farming household that regularly used pesticides were 6 times more likely to have a miscarriage and 4.5 times more likely to have a baby with a birth defect. International Journal Occupational Environmental Health. 1 July 2002. More...
Organic food carries demonstrably and significantly lower pesticide contamination than conventionally-grown produce.
This reassuring but unsurprising result published in the scientific journal "Food Additives and Contaminants" will help establish the baseline against which further improvements mandated by the Food Quality Protection Act of 1996 in conventional and IPM-based agriculture can be compared. 1 May 2002. More...
Researchers report that four different estrogen mimics interact additively when combined in mixtures.
These experiments were designed to examine one of the great unknowns of toxicology: do experiments with single chemicals tell us anything about how contaminants behave in mixtures. This is important because virtually all of us are exposed to mixtures in the real world, not single chemicals, even though virtually all regulatory testing is based on experiments with single chemicals 1 October 2000. More...
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