TIL that Marie Curie's lab papers from the 1890's are still radioactive. They are stored in lead-lined boxes and one must don protective gear to see them.

http://en.wikipedia.org/wiki/Marie_Curie



Submitted March 18, 2015 at 05:39PM by strider7 http://www.reddit.com/r/todayilearned/comments/2zgjpb/til_that_marie_curies_lab_papers_from_the_1890s/