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A human parasite with a streamlined mitochondrion

Mitochondria, as they are defined in textbooks, are essential for eukaryotic cells--including our own--because they make large amounts of energy as they use oxygen. However, some eukaryotic cells, including important parasites of humans--such as Entamoeba histolytica, the causal agent of amoebic dysentery--live in environments that are too oxygen poor to support this process. Nevertheless, Entamo...

Freeze-dried mats of microbes awaken in Antarctic streambed

An experiment in a dry Antarctic stream channel has shown that a carpet of freeze-dried microbes that lay dormant for two decades sprang to life one day after water was diverted into it, said a University of Colorado at Boulder researcher. The results showed the resilience of life in the harsh polar environment, where temperatures are below freezing for most of the year and glacial...

Geoscientists follow arsenic from chicken feed to streambeds

What happened to the chicken when she crossed the road is less important that what happens to what she eats when it is used as fertilizer. Organic arsenic is fed to poultry to prevent bacterial infections and improve weight gain. A little bit of arsenic is taken up by the tissue and the majority of it is excreted in urine. Poultry litter -- the wood chips, feathers, droppings, and urine fr...

Pesticides in the nation's streams and ground water

Today, the U.S. Geological Survey released a report describing the occurrence of pesticides in streams and ground water during 1992-2001. The report concludes that pesticides are typically present throughout the year in most streams in urban and agricultural areas of the Nation, but are less common in ground water. The report also concludes that pesticides are seldom at concentrations likely to...

Beaver dams create healthy downstream ecosystems

Beavers, long known for their beneficial effects on the environment near their dams, are also critical to maintaining healthy ecosystems downstream. Researchers have found that ponds created by beaver dams raised downstream groundwater levels in the Colorado River valley, keeping soil water levels high and providing moisture to plants in the otherwise dry valley bottom. The results will be publis...

Swimming 'to the left' gets bacteria upstream, and may promote infection

Yale engineers who study both flow hydrodynamics and how bacteria propel themselves report that one reason for the high incidence of infections associated with catheters in hospital patients may be that some pathogenic bacteria swim "to the left," in a study published in Physical Review Letters. "Escherichia coli (E. coli) and some other pathogenic bacteria with flagella interact with th...

Farmed salmon could become an invasive species in forest streams

Ever since the Norwegians expanded commercial farming of salmon in the 1960s, the industry has continued to rapidly grow worldwide. It has expanded to such a degree that prices for farmed salmon have plummeted and, there is concern that farmed fish may become the next invasive species. "Farmed fish escaping from marine net pens might become an invasive species in British Columbia, Washing...

Climate change impacts stream life

Climate change is warming Welsh streams and rivers, affecting the number and variety of some of their smallest animals, a major Cardiff University study has found. Rivers and streams are key ecosystems for many aquatic species and form important links with surrounding habitats, yet little emphasis has been given so far to the ecological effects of climate change on these running-waters....
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(Date:7/24/2008)...TY, Iowa The University of Iowa and Iowa State Un...tly enhance both institutions, genetic research ca...chased a massively parallel DNA sequencer an inst... rate of millions to billions of bases in a single...s will be available on a fee-for-service basis to...
(Date:7/24/2008)...on may have reduced carbon storage in western U.S....rly twentieth century has caused a widespread incr...the density of stems growing on trees within weste...r forests and are thought to account for much of N...nges in aboveground biomass, Fellows and Goulden c...
(Date:7/23/2008)...althy nations willing to collectively spend about ...roughly half a billion metric tons of carbon dioxi...ggests. , It would take about that much money t...ion in the world, one of the top contributors to g... If adopted, this type of program could have poten...
(Date:7/23/2008)...recent study shows that popular fish oil supplemen... acute wounds in human skin. But whether that effe...ted, remains a mystery. , The omega-3 fatty acid...fit cardiovascular health and other diseases relat...nflammatory properties. But insufficient inflammat...
Breaking Biology News(10 mins):UI and ISU establish shared DNA sequencing instrumentation 2UI and ISU establish shared DNA sequencing instrumentation 3AGU journal highlights -- July 23, 2008 2AGU journal highlights -- July 23, 2008 3AGU journal highlights -- July 23, 2008 4AGU journal highlights -- July 23, 2008 5AGU journal highlights -- July 23, 2008 6AGU journal highlights -- July 23, 2008 7AGU journal highlights -- July 23, 2008 8Paying to save tropical forests could be a way to reduce global carbon emissions 2Paying to save tropical forests could be a way to reduce global carbon emissions 3Paying to save tropical forests could be a way to reduce global carbon emissions 4Scientists suspect omega-3 fatty acids could slow acute wound healing 2Scientists suspect omega-3 fatty acids could slow acute wound healing 3Scientists suspect omega-3 fatty acids could slow acute wound healing 4Why your fertility cells must have radio silence 10407 1Why your fertility cells must have radio silence 10407 2Child Abuse and Neglect Cost Nation over 24100 Billion per Year 3B Most Federal Child Welfare Funds Unavailable for Prevention Services and Programs 10402 1Child Abuse and Neglect Cost Nation over 24100 Billion per Year 3B Most Federal Child Welfare Funds Unavailable for Prevention Services and Programs 10402 2Child Abuse and Neglect Cost Nation over 24100 Billion per Year 3B Most Federal Child Welfare Funds Unavailable for Prevention Services and Programs 10402 3Harland Medical Systems to Offer March Plasma Systems Surface Materials 2830 1Harland Medical Systems to Offer March Plasma Systems Surface Materials 2830 2DuPont Announces Leadership Changes 10395 1
(Date:7/25/2008)...wswire/ -- Sagent Pharmaceuticals, Inc.,a private...nounced that it,has launched amiodarone HCl inject... the treatment and prophylaxis of frequently recur...unstable ventricular,tachycardia -- a potentially ...iodarone HCl injection will be available immediate...
(Date:7/25/2008)...gus can cause immune system changes , , ...ence linking gastroesophageal reflux disease (GERD...y Medical Center researchers. , An association ...1970s, and since then studies have shown that betw...lso experience GERD symptoms. But the actual link ...
(Date:7/25/2008)...ou are an Olympian, Professional Athlete, Elite Am...u Need to Know about Hydration to Boost Sports Per...r , Marina del Rey, Calif...tes are heading to Beijing following years of inte...pes of capturing an Olympic medal and securing the...
(Date:7/24/2008)...ers at Wake Forest University Baptist Medical Cent...that the hepatitis C virus slows or stunts the imm...atients are treated with a combination of drugs kn...ction is more serious in HIV-infected people, lead...s for Disease Control. Intravenous drug use is a m...
Breaking Medicine News(10 mins):Health News:Sagent Pharmaceuticals Launches Amiodarone HCl Injection, USP 2Health News:Sagent Pharmaceuticals Launches Amiodarone HCl Injection, USP 3Health News:People With GERD More Likely to Develop Asthma 2Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 2Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 3Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 4Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 5Health News:Researchers disprove long-standing belief about HIV treatment 2Health News:Researchers disprove long-standing belief about HIV treatment 3
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