Nuclear Mapping [mapping.jp] (Google Earth Plug-in is required) is a real-time visualization of the tweets (purple) and retweets (red) that contain the hashtag #nuclear. The representation of this Twitter communication is combined with multicolored circles, which stand for the geographical locations of all nuclear reactors in the world.
More detailed information on individual tweets and nuclear reactors can be accessed through selecting the appropriate icons. An interactive timeline slider rounds of the interactivity features.
Via Google Earth Blog.