Congratulations, Sean! Jason Socrates Bardi at the American Institute of Physics website:
In recognizing Carroll, the AIP prize committee cited him “for extraordinary public outreach on particle physics and cosmology, as an educator, author, public lecturer, and consultant for TV and radio programs, and for his pioneering work communicating with a variety of international audiences using social networking.”
“Few people can make complicated topics like the nature of space and time as accessible as Sean Carroll does,” said Catherine O'Riordan, AIP vice president of Physics Resources. “He doesn't just inspire the public’s scientific imagination — he provides the tools for his readers and viewers to answer some of life’s biggest, most fundamental questions themselves.”
Carroll (on Twitter: @seanmcarroll) followed his own curiosity to a career in theoretical physics and cosmology, focusing especially on the origin and constituents of the universe. He received his Ph.D. in 1993 from Harvard University, and has worked at MIT, the Institute for Theoretical Physics at UC Santa Barbara and the University of Chicago. He has made significant contributions to models of interactions between dark matter, dark energy, and ordinary matter; alternative theories of gravity; violations of fundamental symmetries; and the theory of time.
More here.