Complex networks: connections, measurements, and social systems with Sune Lehmann

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. Ecosystems are complex networks of animals eating other organisms. Some form social networks of packs and flocks, and humans have refined social structures into an artform with clans, nations, political parties, subcultures and Twitter hashtags. Our computers are connected in a global network, providing access to much of our combined knowledge as a species, which can also be described as a complex network. Networks are everywhere. Since the turn of the millenium, a new understanding of these networks has begun to take form, and a ne