radio frequency
Cellphones don’t cause cancer: report
If you’re worried that cellphone use can lead to cancer, worry no more – if you believe a new Danish Cancer Society study, that is. A project which ran for almost 30 years surveyed cancers reported among 16 million adults in Denmark, Finland, Norway and Sweden and “found no related, observable change in the incidence of cases up until 2003,” says the Guardian , going on: “Published in the Journal of the National Cancer Institute, the research covers a more recent period than previous studies. It suggests that if there is any risk from regular use of mobile phones, it would take more than five to 10 years for the tumours to appear.” The study covered 59,984 brain tumour cases diagnosed between 1974 and 2003, but “The only well-established risk factors — ionizing radiation and rare hereditary syndromes — account for a small proportion of brain tumour cases,” it found.
Continue reading »Radio astronomers seeking open-spectrum national parks
Readers of Ars will undoubtedly be familiar with some of the battles over spectrum allocation for wireless devices and services. As the number of wireless devices and their bandwidth requirements continue an apparently inexorable climb, the fight over who should get which chunk of the radio spectrum has generally played out between big business and public interests. One group that hasn’t generally appeared to be taking part in the scrum is the science community, but that’s not for lack of interest—the radio spectrum is used for both astronomy and the monitoring of the environment on Earth.
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