Find more about Science and Cocktails, and awesome science talks at http://www.scienceandcocktails.org/ According to Carl Sagan, the beauty of a living thing is not the atoms that go into it, but the way those atoms are put together. In our cells, atoms compose a multitude of molecules such as proteins and DNA, which coexist in a complex, mutually dependent network. Similarly, our cells themselves exist in an interdependent network of organs and nerves, and our very consciousness is thought to arise from the complex network of billions of neurons, connected by trillions of synapses. Networks are everywhere. From the Internet to networks of friendship, disease transmission, and even terrorism, the concept - and the reality - of networks has come to pervade modern society. But what exactly is a network? What different types of networks are there? Why are they interesting, and what can they tell us? In recent years, scientists from a range of fields - including mathematics, physics, computer science, sociology, and biology - have been pursuing these questions and building a new "science of networks." We've long suspected that we live in a small world, where everything is connected to everything else. Albert-Láslzó Barabási, the world’s leading scientist in network science, spanning a wide range of topics from physics to computer science, engineering, economics and the social sciences, will explain the new developments in network science. From the origins of the six degrees of separation between any two human beings to how viruses like Ebola and H1N1 spread and why it is that our friends have more friends than we do, Albert-Láslzó Barabási will show the reality of our world in a totally new way.