i thought this was sorted in 1985?
anyway try: http://en.wikipedia.org/wiki/Microwave_oven
“The radiation produced by a microwave oven is non-ionizing. It therefore does not have the cancer risks associated with ionizing radiation such as X-rays and high-energy particles. Long-term rodent studies to assess cancer risk have so far failed to identify any carcinogenicity from 2.45 GHz microwave radiation even with chronic exposure levels, i.e., large fraction of one’s life span, far larger than humans are likely to encounter from any leaking ovens”