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Milwaukee - The federal Centers for Disease Control and Prevention are looking into whether two cases of salmonella food poisoning in Wisconsin might have come from eating raw tomatoes.
Like a wristwatch that needs to be wound daily for accurate time-telling, the human circadian system - the biological cycles that repeat approximately every 24 hours - requires daily light exposure to the eye's retina to remain synchronized with the solar day. In a new study published in the June issue of Neuroscience Letters, researchers have demonstrated that when it comes to the circadian system, not all light exposure is created equal.
The findings have profound implications for exploring how lighting can be used to adjust our bodies' clocks, and they could redefine the way lighting is manufactured, according to Mariana Figueiro, lead author of the paper and assistant professor in the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute.
Short-wavelength light, including natural light from the blue sky, is highly effective at stimulating the circadian system. Exposure to other wavelengths - and thus colors - of light may necessitate longer exposure times or require higher exposure levels to be as effective at "winding the watch."
The findings have profound implications for exploring how lighting can be used to adjust our bodies' clocks, and they could redefine the way lighting is manufactured, according to Mariana Figueiro, lead author of the paper and assistant professor in the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute.
Short-wavelength light, including natural light from the blue sky, is highly effective at stimulating the circadian system. Exposure to other wavelengths - and thus colors - of light may necessitate longer exposure times or require higher exposure levels to be as effective at "winding the watch."
A South Korean humanitarian agency says a mysterious epidemic has been spreading along North Korean towns along the border with China, killing dozens of children.
The Seoul-based Good Friends agency says five or six children have died every day since the highly infectious disease emerged on April 27.
The Seoul-based Good Friends agency says five or six children have died every day since the highly infectious disease emerged on April 27.
Cuba, in the latest change since President Raul Castro took office in February, has allowed doctors to perform sex change operations, a specialist at the National Center for Sex Education said on Friday.
Center director Mariela Castro, the president's daughter, has pushed for the operations and said that at least 28 people in the country of 11 million want the surgery.
The specialist, who asked not to be named, said the Public Health Ministry approved the surgery this week. Cuba's health care system will perform it free of charge.
Center director Mariela Castro, the president's daughter, has pushed for the operations and said that at least 28 people in the country of 11 million want the surgery.
The specialist, who asked not to be named, said the Public Health Ministry approved the surgery this week. Cuba's health care system will perform it free of charge.
This is a transcript from PM. The program is broadcast around Australia at 5:10pm on Radio National and 6:10pm on ABC Local Radio.
You can also listen to the story in REAL AUDIO and WINDOWS MEDIA and MP3 formats.
MARK COLVIN: A worrying new research paper has been published in the United States.
It proves that H5N1 bird flu, which has so far only killed people in its pure form is capable of combining with conventional human flu viruses.
A mutated virus combining human flu and bird flu is the nightmare strain which scientists fear could create a worldwide pandemic.
The research was conducted in a laboratory by the US Centers for Disease Control.
Jeff Waters reports.
You can also listen to the story in REAL AUDIO and WINDOWS MEDIA and MP3 formats.
MARK COLVIN: A worrying new research paper has been published in the United States.
It proves that H5N1 bird flu, which has so far only killed people in its pure form is capable of combining with conventional human flu viruses.
A mutated virus combining human flu and bird flu is the nightmare strain which scientists fear could create a worldwide pandemic.
The research was conducted in a laboratory by the US Centers for Disease Control.
Jeff Waters reports.
Following successful testing on animals, a Vietnamese health institute has asked the Health Ministry for permission to test its bird flu vaccine among humans.
Hospitals and airplanes ban the use of cell phones, because their electromagnetic transmissions can interfere with sensitive electrical devices. Could the brain also fall into that category? Of course, all our thoughts, sensations and actions arise from bioelectricity generated by neurons and transmitted through complex neural circuits inside our skull. Electrical signals between neurons generate electric fields that radiate out of brain tissue as electrical waves that can be picked up by electrodes touching a person's scalp. Measurements of such brainwaves in EEGs provide powerful insight into brain function and a valuable diagnostic tool for doctors. Indeed, so fundamental are brainwaves to the internal workings of the mind, they have become the ultimate, legal definition drawing the line between life and death.
Brainwaves change with a healthy person's conscious and unconscious mental activity and state of arousal. But scientists can do more with brainwaves than just listen in on the brain at work-they can selectively control brain function by transcranial magnetic stimulation (TMS). This technique uses powerful pulses of electromagnetic radiation beamed into a person's brain to jam or excite particular brain circuits.
Brainwaves change with a healthy person's conscious and unconscious mental activity and state of arousal. But scientists can do more with brainwaves than just listen in on the brain at work-they can selectively control brain function by transcranial magnetic stimulation (TMS). This technique uses powerful pulses of electromagnetic radiation beamed into a person's brain to jam or excite particular brain circuits.
Almost one in six cases of depression among working Victorians are caused by job stress. This means more than 21,000 cases of preventable depression are caused by job stress each year, a new University of Melbourne study shows.
Stressful working conditions in this study were defined as a combination of high job demands and low control over how the job gets done (or 'job strain').
Stressful working conditions in this study were defined as a combination of high job demands and low control over how the job gets done (or 'job strain').
Uganda has the highest rate of post-traumatic stress and depression ever recorded, following extremely high of civilian exposure to violence and poor healthcare, a study published in BMC Psychiatry says today.
Health officials from Greece, Israel and Cyprus met in Miami on Thursday to discuss a plan to share transplant organs and overcome the challenge of having small populations and low donation rates.
An informal pooling of medical resources _ organs as well as specialist surgeons _ has existed among them for several years. But the Mediterranean nations are now looking to formalize the relationship, make it more efficient and consistent, and establish a Web-based donor registry to facilitate it, officials said.
An informal pooling of medical resources _ organs as well as specialist surgeons _ has existed among them for several years. But the Mediterranean nations are now looking to formalize the relationship, make it more efficient and consistent, and establish a Web-based donor registry to facilitate it, officials said.
Comment: Amazing that despite all the evidence presented throughout the article that cell phones pose a grave danger to our mental and physical health, last paragraph offers a calming and damage control message: "Relax people, so what if cell phones have an ability to alter your brain chemistry and function? We assure you that such interesting fact won't cause any serious harm, all the more so, won't be used for insidious purposes. No way!"
Well, consider the following:
From: Mind Control and HAARP