Risking It All: Why are public health authorities not concerned about Ebola in the US? Part I. Fat tailed distributions

US public health authorities claim imposing quarantines on healthcare workers returning from West Africa is incorrect according to science. Their positions rely upon a set of studies and experience about outbreaks and transmission mechanisms in Africa as well as assumptions about what those studies imply about outbreaks in the US...

Visualizing the “Heartbeat” of a City with Tweets

Describing the dynamics of a city is a crucial step to both understanding the human activity in urban environments and to planning and designing cities accordingly. Here we describe the collective dynamics of New York City and surrounding areas as seen through the lens of Twitter usage...


The Potential for Increase in Global Ebola Transmission During End of Year Liberian Holiday Travel

The 2014 Ebola outbreak has killed five thousand as of the end of October. While infections have primarily been in Guinea, Sierra Leone and Liberia, land travel has brought cases to Senegal and Mali, and air travel has brought them to Nigeria and the US...


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