The main story point here, of course, is that the human body has capacity to self-repair from exposure to ionizing radiation, which is to be expected given the evolutionary development of sexually reproducing multicellular organisms.

I found it interesting that this article stands as a counterexample to the "law" often referred to on Hacker News that one should assume the answer to a headline that asks a yes/no question is no.

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

Another unit of National Public Radio (the larger organization responsible for this story) has even provided advice on the subject of how to ask questions in headlines:

http://stateimpact.npr.org/teamblog/tag/questions-in-headlin...

Other headline tips (not specific to the issue of headlines that ask yes/no questions) can be found on the site of the The Poynter Institute.

http://www.poynter.org/how-tos/newsgathering-storytelling/14...