Do the radio waves that cell phones emit pose a threat to health?

手机发出的无线电波是否真的对身体健康构成了威胁？

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The continuous and reckless use of synthetic chemicals for the control of pests which pose a threat to agricultural crops and human health is proving to be counter-productive.

为控制害虫，人们持续且不计后果地使用人工合成化学品，对农作物和人类健康造成危害，事实证明会产生相反的效果。

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Plutonium, believed to be from one of the damaged reactors, has been found in nearby soil, although Tepco insists this does not pose a threat to human health.

在附近的土壤中已经发现钚，据信是来自受损的反应堆之一，尽管东京电力公司坚称这不会对人体健康构成威胁。

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None of the reactors pose a threat to public health, said Nuclear Regulatory Commission spokeswoman Diane Screnci.

WSJ: Millions Without Power in New York, New Jersey and Connecticut After Storm

In addition to animal welfare concerns, opponents have said slaughtering horses for human consumption could pose a threat to human health and safety.

NPR: Okla. Governor Signs Horse Slaughter Legislation

On Dec. 7 2009, as expectations grew for the Copenhagen Climate Change Conference, Jackson signed an endangerment finding that asserted carbon dioxide and five other greenhouse gases pose a threat to human health when concentrated in the atmosphere.

FORBES: EPA Chief Resigns: Declared Carbon Dioxide A Pollutant