These days, travel by air has become increasingly common, both for business and leisure travel. We are exposed to low levels of radiation when we fly. You can learn more about radiation from air travel at http://www.cdc.gov/nceh/radiation/air_travel.html Comments on this video are allowed in accordance with our comment policy: http://www.cdc.gov/SocialMedia/Tools/CommentPolicy.html This video can also be viewed at http://www.cdc.gov/wcms/videos/low-res/NCEH/2016/airtravelradiation_1153418.mp4