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Disinfecting male birds might not help curb Lyme disease.
Treating male pheasants against the ticks that carry Lyme disease might do more harm than good. Tick-free males are more sexually attractive, so untreated males are forced to roam farther in search of mates, possibly spreading ticks as they go.
A blood-dwelling bacterium called Borrelia causes Lyme disease, famed for its arthritic symptoms. Ticks spread the bug when they bite rodents, birds, deer and humans.
Many Europeans are now learning to deal with a new currency. But also cash dispensers and cigarette machines must distinguish clearly between euros, the old currencies and counterfeit money. A miniature computer now checks the coins by means of digital image processing.
For users of the new European currency, having adequate safeguards against forgery is a matter of great importance. The paper money incorporates features such as holograms, watermarks, a security thread, and embossed text to
Dividing, unfertilised eggs could offer new therapeutic option
US researchers have cloned stem cells from the unfertilized eggs of primates – our closest animal relatives. The achievement suggests it may be possible to grow cells that can give rise to any tissue in the human body without cloning and destroying human embryos.
Some researchers in the field doubt whether the technique will work in humans. And opponents of therapeutic cloning do not believe the new cells solve a
Over a third of women attending general practices have experienced physical violence, but doctors and nurses rarely ask about it. Researchers in this week’s BMJ ask:
Should women be screened for domestic violence when they visit their general practitioner?
Is there a high risk group of women for whom screening might be more appropriate?
Is screening acceptable to women?
A sample of women visiting 13 general practices in Hackney, east London were surveyed about different aspects o
The use of halogenated flame retardants in plastics is steadily declining because they are volatile, pose an environmental risk and are difficult to recycle. Microcapsules, fibers and melamine resin foams represent some of the chief alternatives.
As successfully as the endless variety of plastics have established themselves on the market, these multifaceted materials show another face when it comes to fire. They melt and feed the flames like the petroleum from which they were ultimately pro
Researchers grapple with wilt-causing bacteria
It’s the Mike Tyson of plant bacteria,” says Gerry Saddler, of the Scottish Agricultural Science Agency, Edinburgh.
Saddler is referring to Ralstonia solanacearum , the cause of southern bacterial wilt possibly the most important plant disease in the world. French researchers have now sequenced the bacteria’s genome – information that should lead to a better understanding of plant disease, and perhaps new ways to fight it