Scientists couldn't find any visitors from another century, but they had a very interesting time trying. They selected search terms relating to two recent phenomena, Pope Francis and Comet ISON, and began looking for references to them before they were known to exist. Their work was exhaustive: they used a variety of search engines, such as Google and Bing, and combed through Facebook and Twitter. In the case of Comet ISON, there were no mentions before it burst on the scene in September 2012. T...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/4...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/4...