WBEZ brings you unbiased news and information. Sign up for our newsletters to stay up to date on the stories that matter.
Some of the carbon dioxide in your body is radioactive! Don’t worry, it won’t harm you (not sure why we used an exclamation point there). Instead, it might someday be detected by future archaeologists to determine how long ago you walked the Earth.Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers