Secrets of the universe, found underground As the experiments at the Large Hadron Collider continue, beams of particles moving at ever higher speeds smash into each other deep underground. Scientists are hoping to learn more about a particle that may help explain the central mystery of physics.9:06 a.m.
Roger Rusack: Professor of physics at the University of Minnesota.
Joseph Kapusta: Professor of physics at the University of Minnesota.
South Africa's ambassador visits Minnesota South Africa has grown rapidly as a society and an economy since apartheid ended in 1994. A South African leader who grew up during apartheid talks about how his country is both an example and a caution to others on the African continent.10:06 a.m.
Welile Nhlapo: Ambassador, South African envoy to the United States.