3 ms·

Yeah, even longer lived things that decay via alpha particles are dangerous when ingested... high energy atomic nuclei hitting DNA makes for bad juju.

• lstodd 8y ago
  Of which Radon-222 and Radon-226 still are way more threat than some reactor blowing up somewhere. edit: if you've got granite in the basement, be vefy afraid :)
• vlehto 8y ago
  Lead has infinite half life and it's very dangerous when ingested!