VOA 2011年6月6日文本

Now, the VOA Special English program WORDS AND THEIR STORIES.
From birth to death, the word kick has been given an important part in expressing human experience. The proud and happy mother feels the first signs of life kicking inside her womb. And that same life -- many years later -- comes to its end in a widely-used expression, to kick the bucket, meaning to die.
The expression to kick the bucket is almost two hundred years old. One belief is that it started when an English stableman committed suicide by hanging himself while standing on a pail, or bucket. He put a rope around his neck and tied it to a beam in the ceiling, and then kicked the bucket away from under him.
This is the VOA Special English Technology Report.
The World Health Organization has added to the debate over the risk of brain cancer from mobile phone use. Last week the WHO's International Agency for Research on Cancer listed the signals from wireless devices as "possibly carcinogenic." This finding puts cell phones in the same risk group as the pesticide DDT -- but also in the same group as coffee.
A group of thirty-one scientists from fourteen countries made the finding. The announcement came at the end of a meeting at the agency's headquarters in Lyon, France.
The concern is that extended contact with radiofrequency electromagnetic fields may increase a user's risk for glioma. Glioma is the most common form of brain cancer.
The scientists spent a week examining existing research. Dr. Jonathan Samet from the University of Southern California led the group.
JONATHAN SAMAT: "We also carefully consider the sources of exposure of populations to radiofrequency electromagnetic fields, the nature of these fields as they come from various devices, including wireless phones, and we look carefully at the physical phenomenon by which exposure to such fields may perturb biological systems and lead to cancers."
He says the finding that there could be some risk means scientists need to keep a close watch for a link between cell phones and cancer.
The statement noted that the number of mobile phone users is large and growing, especially among young adults and children. Mobile phone subscriptions are estimated at five billion worldwide.
The scientists called for more research into long-term, heavy use of mobile phones. They also suggested taking measures to reduce exposure to the signals, like hands-free devices or texting. Camilla Rees from an American group called Electromagnetic Health praised the report but says wider research is needed.
CAMILLA REES: "We’ve only had this technology around for about fifteen years, and most carcinogens will take about several decades, thirty-forty years to develop a cancer. So based on some early indications, scientists are projecting that we’re actually going to be seeing a tsunami of brain cancer unless we do something to educate people to lower their exposure to this kind of risk."
CTIA, the International Association for the Wireless Telecommunications Industry, dismissed the report. The group pointed out that no new research had been done. And it noted that the cancer research agency has given the same finding to things like coffee and pickled vegetables.。