![](http://o.aolcdn.com/hss/storage/midas/b6c54f7534ea0b8af066d6da91979dc6/204773348/jessDSCF6294wm1200-ed.jpg)
One of the problems with building sensors to detect ubiquitous dangers is that those dangers remain, you know, ubiquitous. Despite this, a company called Dosime has built a portable radiation meter that will warn you about the invisible killer. The o...