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.
世界卫生组织加大了手机对脑癌的风险讨论。上周，世界卫生组织的国际癌症研究中心（International Agency for Research on Cancer）将无线设备信号列入“可能致癌物”名单中，这一调查结果将移动电话列入与杀虫剂DDT的同等风险等级——并与咖啡处于同等级别。
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."
|The World Health Organization says signals from cellphones are possibly carcinogenic|
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.
蜂窝电信产业协会（CTIA），国际无线通信产业协会（International Association for the Wireless Telecommunications Industry）驳回了该说法。该小组指出，还没有做出新的研究，并且癌症研究中心对咖啡和腌菜也有同样发现。
And that's the VOA Special English Technology Report, written by June Simms. You can find a link to the statement from the World Health Organization at voaspecialenglish.com. And while you're there, tell us your thoughts about this whole issue of mobile phone safety. I'm Steve Ember.