Is my watch hot? [more inside]
posted by yellowcandy on Jun 28, 2009 - 10 answers

My friend was just diagnosed with Graves Disease and the doctor decided it was so serious he should immediately get radioactive iodine treatment, and he was given a 16mCi pill today. So, apparently, he is very radioactive right now, and would set off Homeland Security terror alerts in airports if he walked through. [more inside]
posted by extrabox on Feb 21, 2006 - 15 answers

Are there any animals that have evolved a use for radioactivity? If so, what ways is it used? If not, why has this not happened? [more inside]
posted by 0bvious on Nov 23, 2005 - 32 answers