11.   Because there has been little research on the effects of long-term human exposure to low levels of microwave radiation, many health questions about portable telephones remain unresolved.

12.   British scientists report that microwave radiation can indirectly damage roundworms.

13.   But he eventually came to terms with the Big Bang, and has since made a profession of observing its afterglow, the cosmic microwave background radiation.

14.   But, they say, the microwave radiation did not heat the worms.

15.   Conventional radar tracks storms by detecting microwave radiation reflected by precipitation.

16.   Could you get enough microwave radiation to give you cataracts?

17.   Eleanor R. Adair wants to tell the world what she sees as the truth about microwave radiation.

18.   He is a theoretical astonomer who studies cosmic microwave background radiation and uses data to make computer-generated models of the universe.

19.   High levels of microwave radiation are known to be dangerous.

20.   In an effort to reassure cell phone users, the cell phone industry announced Tuesday that new cell phones will carry labels describing how much microwave radiation they emit.