, which explains how tiny, vibrating strings of energy might unify all of nature's forces. : He co-founded the World Science Festival
Carroll: "I agree. The fabric of spacetime is a dynamic entity that's shaped by matter and energy. According to Einstein's theory of general relativity, spacetime is curved by massive objects, such as planets and stars. However, at the quantum level, spacetime becomes grainy and ill-defined." brian greene sean carroll
Sean Carroll, formerly at Caltech and now at Johns Hopkins University, operates from a different angle. While Greene is often associated with the microscopic (strings), Carroll is often associated with the macroscopic (cosmology, time, and entropy). , which explains how tiny, vibrating strings of