KPIX CBS 5 Eyewitness News At 6PM March 17, 2011
day as you say. >> there is no way to avoid it. it is very small amounts. >> reporter: this radiation biologist says exposure comes from a variety of sources. >> flying in an airplane. increased radiation because of the altitude because our atmosphere shields us from radiation. so if you get up high enough you get a higher dose. >> reporter: according to the american nuclear society flying exposes you to radiation. watching an old-fashioned t.v., one with a tube exposes you to 10. getting your teeth x-rayed 5. a mammogram 420. >> you always have to think of radiation in terms of risk...
Source: archive.org