Canadian AIDS Memorial Quilt remembering Gaetan Dugas, "Patient Zero" of the AIDS epidemic.

 (from http://www.quilt.ca/section_1.html)

Mike Collins

twenty-six-year-old amateur cartoonist from Elmira, NY.

(from http://www.taterbrains.com/)

Florida's President Ballot. Mike Collins's cartoon satirizing the confusing butterfly ballots used in the 2000 presidential elections. (reproduced with permission of Mike Collins.)

(from http://www.motherjones.com/comics/tater.html)

Elihu Katz, one of the first researchers to recognise the effect of social networks on the diffusion of innovations.

(from http://www.asc.upenn.edu/general/faculty/fek.html)

The campus of the International Center for Theoretical Physics, where Romualdo Pastor-Satorras and Alessandro Vespignani studied the spread of viruses in complex networks.

(from http://www.physicstoday.org/pt/vol-54/iss-9/captions/p31cap2.html)

(from http://www.virusbtn.com/)
 

Alessandro Vespignani,
in Korea in 2001.

(from http://www.ictp.trieste.it/~alexv/)

The Physical Review Letters publication of Pastor-Satorras and Vespignani, demonstrating for the first time that viruses see no threshold on a scale-free network.

(from http://prl.aps.org)

The Nature paper of Liljeros et al reporting that the sexual web is a scale-free network.  It offers direct evidence that most people have one to ten sexual partners during their lifetime, but there are a few who have as many as a thousand. They are the hubs of the sex web.

 (from http://www.nature.com)

Idahila Stanley's painting, that, after reproduced by Nature to accompany the sex web study, it has emerged as a visual symbol of our social connectedness.

Christofer R. Edling and Fredrik Liljeros, the authors of the 'sex-web' paper, having dinner with the author in Sept 9, 2001 in Stockholm.

The spread of viruses in scale-free networks is aided by hubs-- once a hub gets a virus, it can pass it on to a very large number of nodes.

(from http://www.orgnet.com/contagion.html)

Wild Chamberlain, who claimed to have had sex with 20,000 women, turning him into one of the largest hubs of the sex-web.

(from http://www.wiltchamberlain.com/images/trotter03.jpg)