With all the bad news of the nuclear reactor incident in Fukushima, Japan, it's hard to get a handle of exactly how much radiation is bad.
Randall Munroe of XKCD created what is probably the most informative chart about the different doses of radiation you get from various activities of life, from sleeping next to someone to flying over the USA to getting a chest X-ray and more.
Link - via Boing Boing
randall also noted that Fukushima is a rapidly evolving situation and that his numbers can quickly become outdated. sheesh.
randall quoted his sources
will you not do the same?