Sean Carroll gets a fabulous job offer—to work with Stephen Hawking—twice. Sean Carroll is a Research Professor of theoretical physics at the California Institute of Technology. He received his Ph.D. in 1993 from Harvard University. His research focuses on fundamental physics and cosmology, especially issues of dark matter, dark energy, and the origin of the universe. Recently, Carroll has worked on the foundations of quantum mechanics, the arrow of time, and the emergence of complexity. His most recent book is The Particle at the End of the Universe. He has been awarded the Gemant Award by the American Institute of Physics, and the Winton Prize of the Royal Society of London. He frequently consults for film and television, and has been featured on shows such as The Colbert Report, NOVA, and Through the Wormhole with Morgan Freeman. Photo by Adrianne Mathiowetz

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