Join physicist Kim Griest as he takes you on a fascinating excursion, addressing some of the massive efforts and tantalizing bits of evidence which suggest that what goes on in empty space determines the properties of the three-dimensional existence we know and love, and discusses how that reality may be but the wiggling of strings from other dimensions.

Kim Griest’s main interests are the dark matter and the vacuum energy (aka dark energy) that are thought to make up more than 95% of the mass of the Universe.

He is also interested in gravitational lensing, especially microlensing as it is used to search for normally invisible objects such as dark matter, black holes, dim stars, and extra-solar planets.

He also works on other aspects of the early universe such as the production of supersymmetric dark matter, as well as other issues in theoretical and observational astrophysics and particle-astrophysics.