350x350px<unk>  radiation can be classified into two types: ionizing radiation and non-ionizing radiation, based on the capability of a single photon with more than 10 eV energy to ionize atoms or break chemical bonds. Extreme ultraviolet and higher frequencies, such as X-rays or gamma rays are ionizing, and these pose their own special hazards: see radiation poisoning. The most common health hazard of radiation is sunburn, which causes between approximately 100,000 and 1 million new skin cancers annually in the United States. In 2011, the WHO and the International Agency for Research on Cancer (IARC) has classified radiofrequency<unk>  fields as possibly carcinogenic to humans (Group 2B).
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