Albert-László Barabási
Albert-László Barabási is a network scientist, fascinated with a wide range of topics, from unveiling the structure of the brain and treating diseases using network medicine to the emergence of success in art and how science really works. His research has helped unveil the hidden order behind various complex systems using the quantitative tools of network science, a research field that he pioneered, and has led to the discovery of scale-free networks, helping explain the emergence of many natural, technological, and social networks.
Credit: Hamu és Gyémánt / Lábady István

You've heard of Stephen Hawking. Ever heard of Renata Kallosh? Didn't think so.